---
url: 'https://www.corbado.com/blog/passkeys-japan-overview'
title: 'Passkeys Japan: An Overview [2026]'
description: 'Japan’s 2026 passkey landscape: regulatory mandates, FIDO adoption stats and critical implementation lessons'
lang: 'en'
author: 'Vincent Delitz'
date: '2026-01-03T17:41:13.881Z'
lastModified: '2026-03-25T10:01:31.409Z'
keywords: 'passkeys Japan, FIDO authentication Japan, Japan banking security regulations, passkey adoption 2026, Rakuten Securities passkey, Nomura passkey, Japanese Android passkeys, phishing resistant MFA Japan'
category: 'Passkeys Strategy'
---

# Passkeys Japan: An Overview [2026]

## 1. Introduction

In 2025, Japan accelerated [passkey adoption](https://www.corbado.com/blog/passkey-adoption-business-case) in
response to evolving security challenges. Following a rise in unauthorized access
incidents across the financial sector, regulators emphasized that **"ID/password-only
authentication and even email/SMS one-time passwords are not sufficient"** and that
**stronger authentication methods like passkeys should be prioritized** for high-risk
financial actions.

The result: **over 50 passkey providers** live or planned by year-end, **64
organizations** in the FIDO Japan Working Group, and a regulatory timeline that gave the
industry months, not years, to ship.

But Japan's rapid rollout has also stress-tested the FIDO ecosystem in ways that US/Europe
deployments rarely encounter. The combination of high enterprise Windows/Edge share,
diverse [Android](https://www.corbado.com/blog/how-to-enable-passkeys-android) OEM landscape, and strict
corporate network policies has exposed edge cases, especially around **Android passkey QR
codes**, **iPhone cross-device flows**, and **multi-device registration**, that product
teams building for global markets need to understand.

This post covers:

1. **Who's live**: Rakuten Securities, Nomura Securities, SBI, Monex, and more
2. **What triggered it**: the regulatory and fraud timeline
3. **Why APAC is different**: [Android](https://www.corbado.com/blog/how-to-enable-passkeys-android) vs iPhone
   fragmentation
4. **What breaks**: recurring implementation hurdles from the field
5. **What to do about it**: strategic recommendations

## Key Facts

- Over **50 passkey providers** are live or planned in Japan as of late 2025
- **64 organizations** participate in the **FIDO Japan Working Group**
- **Regulatory timeline** accelerated from years to months due to **phishing crisis**
- Major financial institutions already live include **Rakuten Securities**, **Nomura
  Securities**, **SBI Securities**, and **Monex Securities**
- Unique **APAC challenges** include **Android OEM fragmentation**, high **Windows/Edge
  enterprise share**, and **corporate network restrictions**
- **Passkey authentication** is becoming **mandatory** for **critical financial
  operations** across multiple institutions

## 2. The Rollout Tracker: Who is Live?

Japanese financial institutions are moving quickly to meet new regulatory expectations.
Below is a snapshot of the current landscape as of late 2025.

### 2.1 Nomura Securities Passkeys

**Status:** Live (Passkey authentication mandatory from Nov 29, 2025)

Nomura Securities has made passkey authentication mandatory for all users. Key
characteristics:

- Registration via native NOMURA app
- Positions passkeys as [phishing](https://www.corbado.com/glossary/phishing)-resistant and passwordless for
  safer transactions
- Known [Android](https://www.corbado.com/blog/how-to-enable-passkeys-android) issues: Users report "M0902" and
  "Operation interrupted" errors, particularly on certain Android devices/OS combinations
  ([troubleshooting guide](https://reiwabook.blog/nomura-pass-key-error/),
  [support resources](https://www.sakura-agent.net/nomura-passkey-error/))

[Nomura Support](https://www.nomura.co.jp/support/procedure/online/passkey/)

### 2.2 Rakuten Securities Passkeys

**Status:** Live (Introduced Oct 26, 2025)

Rakuten Securities rolled out [FIDO2](https://www.corbado.com/glossary/fido2) passkey authentication with strong
cross-device support:

- [FIDO2](https://www.corbado.com/glossary/fido2) passkey authentication across all trading channels
- Smartphone passkey usable for PC logins via cross-device QR flow
- Strongly recommends
  [migrating to passkeys](https://www.corbado.com/faq/risks-transitioning-sms-otps-to-passkeys)
- **Password disabled after passkey registration**: Unlike other brokers, once a user
  registers a passkey, password login is disabled for that user—a stricter "phased
  migration" approach.
- Provides API for household account apps to replace scraping.

[Rakuten News](https://www.rakuten-sec.co.jp/web/info/info20250718-02.html)

### 2.3 SBI Securities Passkeys

**Status:** Live/Planned (FIDO since 2021;
[FIDO2 passkeys](https://www.corbado.com/blog/webauthn-vs-ctap-vs-fido2) by Autumn 2025)

SBI Securities has been an early FIDO adopter and is now transitioning to full passkey
support:

- Replacing Password + SMS OTP
- Initial rollout to web, followed by native apps (10+ apps planned)
- **User Choice**: Maintains password authentication while encouraging passkeys.
- Introduced partially as a response to compensation claims from earlier fraud
- **Challenge**: Facing support congestion (up to 30 min wait times).

[Impress Watch](https://www.watch.impress.co.jp/docs/news/2035818.html)

### 2.4 Monex Securities Passkeys

**Status:** Live (Introduced Oct 31, 2025)

Monex Securities launched with broad platform support and explicit security messaging:

- Broad OS support: [Windows 11](https://www.corbado.com/blog/passkeys-windows-11)+, macOS 13+, Android 11+,
  [iOS](https://www.corbado.com/blog/webauthn-errors) 16+
- Unified experience across Web and App
- Explicitly markets "[Phishing](https://www.corbado.com/glossary/phishing) Resistance"

[Monex Info](https://info.monex.co.jp/news/2025/20250731_03.html)

### 2.5 PayPay Securities Passkeys

**Status:** In Progress (Autumn–Winter 2025)

PayPay Securities is rolling out passkeys as a strongly recommended optional feature:

- "Strongly Recommended" optional feature
- Adds email alerts for login/withdrawal as a secondary signal
- Covers multiple trading apps and PC sites

[Impress Watch](https://www.watch.impress.co.jp/docs/news/2043236.html)

### 2.6 Recruit ID Passkeys

**Status:** Live (2025)

Recruit ID has implemented passkeys with multi-device support:

- Supports multi-device registration
- Strong warnings against registering credentials on shared/public devices

[Recruit Announcement](https://point.recruit.co.jp/recruitid/doc/announcement/passkey.html)

### 2.7 Acom Passkeys (Consumer Finance)

**Status:** Suspended (New biometric registration paused, mid-2025)

Acom paused new biometric registration to review and strengthen enrollment security, a
[cautionary tale](https://infrontsecurity.net/blogs/column/passkey2): even
[phishing](https://www.corbado.com/glossary/phishing)-resistant [authenticators](https://www.corbado.com/glossary/authenticator) require
strong initial enrollment verification to prevent unauthorized access.

[Acom FAQ](https://faq.acom.co.jp/)

### 2.8 Mizuho Securities Passkeys

**Status:** Planned (Passkey mandatory from Feb 9, 2026)

Mizuho Securities will require passkeys for all critical account operations:

- Required for: transactions, deposits/withdrawals, account changes
  on ネット倶楽部 and 株アプリ
- Supported: [Windows 11](https://www.corbado.com/blog/passkeys-windows-11) (Edge/Firefox/Chrome), macOS 14+,
  [iOS 17](https://www.corbado.com/blog/apple-passkeys-integration)+, Android 10+
- Uses [Windows Hello](https://www.corbado.com/glossary/windows-hello),
  [iCloud Keychain](https://www.corbado.com/glossary/icloud-keychain), or
  [Google Password Manager](https://www.corbado.com/blog/how-to-use-google-password-manager)

[Mizuho FAQ](https://faq.mizuho-sc.com/faq/show/13648)

### 2.9 WealthNavi Passkeys

**Status:** Live (>200k registrants, 40-50% active users)

WealthNavi is taking the most aggressive stance toward a password-free future.

- **Mandatory Path**: Aims to abolish password authentication within the next year.
- Provides API integration for household account apps to replace scraping.
- Anticipates new technologies like Apple's "Automatic Passkey Upgrade".
- [ITmedia Article](https://www.itmedia.co.jp/business/articles/2601/06/news006.html)

### 2.10 SMBC Nikko Securities Passkeys

**Status:** Live (Started Jan 30, 2026)

SMBC Nikko Securities has launched passkey authentication for its web services, including
online trading for individual customers.

- Uses **passkeys (FIDO2)** positioned as stronger protection against **phishing and
  account hijacking**
- Designed to improve convenience by **removing password entry** and reducing
  password-reset friction
- Implemented as a **cloud-based** authentication service, enabling relatively fast
  deployment (reported as about **five months**)
- Explicitly highlights that **biometric data stays on the user’s device**, relying on
  public-key cryptography rather than server-side biometric storage
- Plans to **expand** the approach to additional SMBC Nikko online services over time

[Press Release](https://global.fujitsu/en-global/pr/news/2026/02/02-01)

## 3. The Catalyst: From Phishing Crisis to Regulatory Mandate

Japan's passkey sprint was not a UX trend. It was a defensive response to phishing-led
account takeover (ATO) that escalated until regulators intervened directly.

### 3.1 Phishing pressure, and regulators explicitly naming passkeys (late 2024 → early 2025)

In a January 2025
[dialogue document](https://www.fsa.go.jp/en/press_releases/issues/202501/02.pdf), Japan's
[Financial Services](https://www.corbado.com/passkeys-for-banking) Agency (FSA) describes phishing damages as a
major fraud channel and lists **“promotion of the use of passkeys”** as a countermeasure
(alongside DMARC and faster takedowns). It also notes a joint notice with the National
Police Agency issued **Dec 24, 2024** to request stronger anti-phishing measures.

### 3.2 2025: Regulatory Focus: Unauthorized Access in Online Trading

By mid-2025, the
[FSA highlighted](https://www.fsa.go.jp/en/press_releases/issues/202506/02.pdf)
"unauthorized access and transactions in Internet transactions for securities accounts"
and explicitly stated that **ID/password-only** authentication is often insufficient
against modern threats.

### 3.3 JSDA guideline revision draft: phishing-resistant MFA is default-on for critical actions

On **July 15, 2025**, the Japan Securities Dealers Association (JSDA) published a draft
revision of its guideline for preventing unauthorized access in internet trading. The
draft calls for implementing and requiring (default-on) **phishing-resistant MFA** for
**login**, **withdrawal**, and **bank-account change** flows, explicitly giving
**passkeys** as an example; it also raises the bar on detection/notification and lockout
controls.
([JSDA draft guideline PDF](https://www.jsda.or.jp/about/public/bosyu/files/20250715_guideline_public.pdf);
[coverage](https://www.watch.impress.co.jp/docs/news/2031496.html)) The mandatory deadline
is expected to be **summer 2026**.

By December 2025, the [FIDO Alliance](https://www.corbado.com/glossary/fido-alliance) Japan Working Group had
grown to **64 member organizations**, with **over 50 passkey providers** live or planned
in Japan, a [direct result](https://japan.cnet.com/article/35241293/) of the
securities-phishing crisis and subsequent regulatory push.

### 3.4 Acom reminder: "passwordless" is only as safe as enrollment + recovery

Acom's temporary pause of **new biometric registration** (mid-2025) is a useful
[cautionary tale](https://infrontsecurity.net/blogs/column/passkey2): even
phishing-resistant [authenticators](https://www.corbado.com/glossary/authenticator) require strong initial
enrollment verification to prevent unauthorized access.
([Acom FAQ](https://faq.acom.co.jp/))

The following timeline illustrates how quickly regulatory pressure escalated:

## 4. Why APAC Requires Adapted Strategies: Device + Browser Reality

If you ship passkeys into Japan (and broader APAC), you're operating in a more
_heterogeneous_ device and network environment than US/Europe testing typically covers.

- Japan traffic is not "mobile-only";
  [desktop remains significant](https://gs.statcounter.com/platform-market-share/desktop-mobile/japan).
- Enterprise Windows fleets matter, and
  [Edge share is materially higher](https://gs.statcounter.com/browser-market-share/desktop/japan)
  than in many markets.
- For additional "device reality" context, StatCounter also provides
  [mobile vendor](https://gs.statcounter.com/vendor-market-share/mobile/japan) and
  [mobile screen resolution](https://gs.statcounter.com/screen-resolution-stats/mobile/japan)
  distributions (useful proxies for hardware diversity).
- **Android ecosystems** are more diverse (OEM + carrier customization), and passkey
  behavior can depend on the interaction between the OS, the browser, and the platform
  credential provider layer (e.g., Google Play Services / Credential Manager). The
  practical result: more variance, more edge cases, and more "works on device A, fails on
  device B" debugging.
- **OEM-Specific Adoption Blockers:** Advanced enrollment features like
  [Conditional Create](https://www.corbado.com/blog/conditional-create-passkeys) (automatic passkey upgrades)
  often see significantly lower success rates on "OEM Android" hardware (non-Pixel
  devices) compared to Google Pixel devices. For instance, many
  [Samsung](https://www.corbado.com/blog/samsung-passkeys) devices default to [Samsung](https://www.corbado.com/blog/samsung-passkeys)
  Pass as the primary credential manager, which can block the background creation of
  passkeys that relies on
  [Google Password Manager](https://www.corbado.com/blog/how-to-use-google-password-manager) integration.
- **Credential Manager System Bugs:** A significant hurdle on Android 14 is a
  [documented system bug](https://issuetracker.google.com/issues/349310440) where the
  Credential Manager API fails to correctly display the passkey selection UI or returns
  "no credentials found" errors. These
  [Credential Manager passkey errors](https://www.corbado.com/blog/webauthn-errors) often surface as
  `UnknownError` or generic `NotAllowedError` on the web side, making them hard to triage
  without device-level context. This issue has disproportionately affected users on OEM
  hardware, creating unexpected friction during high-stakes financial app rollouts.
- **OEM Android Challenges:** Independent
  [analysis of recent financial app rollouts](https://reiwabook.blog/nomura-pass-key-error/)
  has identified authentication challenges on specific Android 14 devices (including
  popular [Samsung](https://www.corbado.com/blog/samsung-passkeys) Galaxy A,
  [Sony](https://www.corbado.com/blog/playstation-passkeys-ps4-ps5) Xperia, and Sharp AQUOS models). These issues
  typically manifest on non-Google Pixel hardware, as Google's own implementation tends to
  be more consistent with the latest FIDO standards. See also
  [local support resources](https://www.sakura-agent.net/nomura-passkey-error/) for
  detailed [troubleshooting](https://www.corbado.com/blog/passkey-troubleshooting-solutions).
- This isn't hypothetical: a
  [2024 NDSS paper](https://www.ndss-symposium.org/wp-content/uploads/2024-175-paper.pdf)
  analyzing official OEM security-update datasets shows how many region/country/carrier
  variants large Android OEMs support at once (e.g., Samsung: **\~1,400 unique models** of
  **402 devices** across **97** countries and **109** carriers; Xiaomi: **223** devices
  across **10** regions). The paper also notes this workload can introduce **delays** (or
  even failures) in delivering some security updates, meaning patches can reach end users
  later or unevenly.

## 5. Implementation Considerations: The Failure Modes

As organizations in Japan move from specification to production, several recurring failure
modes have emerged. These real-world scenarios illustrate the gap between standard testing
and APAC deployment reality.

### Case 1: The "Blind Rollout" Scenario

A service provider accelerates passkey rollout to meet regulatory guidelines, introducing
passkeys to all users simultaneously without device-level telemetry.

- **The Failure:** Teams see "success" on their own test devices but are blind to 3×
  higher failure rates on fragmented OEM hardware. Users encounter confusion (e.g.,
  unsupported devices, missing platform accounts) and simply drop off, but the bank has no
  data to explain _why_ or _where_ the friction occurs.

### Case 2: The Multi-Access Point Connectivity Wall

A user tries cross-device passkey authentication (PC ↔ phone) from inside a corporate
network or a Japanese home office.

- **The Failure:** The "happy path" assumes flawless Bluetooth/Hybrid flow connectivity.
  In reality, corporate proxies frequently block the traffic required for FIDO Hybrid
  flows. Without robust multi-access point planning, this turns a seamless login into a
  permanent connectivity barrier.

### Case 3: OEM Fragmentation & System Bugs

A previously working flow starts failing after an OS update, or only fails on certain
manufacturer devices (Samsung, [Sony](https://www.corbado.com/blog/playstation-passkeys-ps4-ps5), Sharp).

- **The Failure:** Documented Android 14 bugs and OEM-specific defaults (like Samsung
  Pass) block standardized flows. The [passkey provider](https://www.corbado.com/blog/passkey-providers) layer
  behaves inconsistently across versions, leading to
  [QR code](https://www.corbado.com/blog/qr-code-login-authentication) handoff failures or `NotAllowedError` /
  "no credentials found" errors that are impossible to triage without device-specific
  monitoring and a proper WebAuthn error classification.

### Case 4: The "Terminal Lockout" Risk

A service disables password fallbacks too early or fails to secure initial enrollment
verification.

- **The Failure:** If the initial enrollment is insecure (like the Acom case), an attacker
  with a stolen password registers their own passkey. Conversely, once a bank goes
  "passwordless" to meet 2025 mandates, any enrollment friction or device failure becomes
  an absolute user lockout, as there is no legacy safety net to fall back on.

## 6. Strategic Recommendations

To mitigate the risks identified above, product and security teams must adopt a
preventative architecture. We have tried to outline the most important recommendations
here:

1. **Invest in Authentication Observability and Gradual Rollouts.** You must track passkey
   prompt → completion rates by device, OS, and browser to catch the "3× failure" gap
   before support tickets arrive.
    - **On Web**: Phase rollouts by OS version and browser type.
    - **On Native**: Phase by specific device models (e.g., Pixel first, then OEM
      manufacturers) to catch regressions early.
    - **Monitoring**: Continuously monitor storage locations (System vs. Third-Party) to
      understand lockout risks.

2. **Treat Enrollment as a Security Surface.** phishing-resistant auth is only as strong
   as the initial binding. Require step-up verification (eKYC, existing strong factor)
   before passkey registration to prevent attackers from "hijacking" the move to
   passwordless.

3. **Prepare to go Completely Passwordless.** Expect regulatory pressure to accelerate
   toward a total phase-out of passwords for initial login. This makes solving the
   technical hurdles mentioned in Section 5 a compliance mandate: once the password
   fallback is removed, any device-level failure becomes a terminal lockout.

4. **Build an APAC-weighted Device Matrix.** Samsung,
   [Sony](https://www.corbado.com/blog/playstation-passkeys-ps4-ps5), and Sharp models dominate Japan. If your
   test matrix is limited, you will ship bugs. Include Japan-heavy OEMs and use the
   observability data from Recommendation 1 to refine your supported device list in
   real-time.

5. **Architect for Multi-Device and Multi-Access Point Reality.** Assume Bluetooth CDA and
   corporate proxies will fail. Provide clear network requirements and robust fallbacks,
   such as multi-device registration, to ensure users can authenticate regardless of their
   environment or access point.

6. **Evaluate Hardware Security Keys as a High-Assurance Complement.** For users in highly
   restricted corporate environments or those requiring maximum assurance, hardware
   security keys (such as [YubiKeys](https://www.corbado.com/glossary/yubikey)) offer a powerful alternative to
   synced passkeys. These keys provide a physical root-of-trust that works consistently
   across almost any device, including mobile and legacy desktop fleets, without relying
   on platform-specific cloud synchronization or Bluetooth connectivity. A robust
   architecture should allow these hardware-bound
   [authenticators](https://www.corbado.com/glossary/authenticator) to coexist alongside platform passkeys,
   giving users the flexibility to choose the "key" that fits their specific access
   context.

7. **Automate Recovery to Prevent Support Bottlenecks.** Transitioning to a passwordless
   model is only sustainable if you have a streamlined recovery process that doesn't
   reintroduce weak authentication methods. For high-security sectors like Japanese
   finance, this means moving beyond SMS/email resets to "Smart MFA" recovery, such as
   selfie-based [identity verification](https://www.corbado.com/blog/digital-identity-guide) or cross-device
   fallbacks using trusted hardware. Without an automated recovery plan, the initial
   reduction in password-reset tickets will quickly be offset by a surge in complex
   passkey-loss support calls.

**The bottom line:** Japan's experience shows that the gap between "spec compliance" and
"works for real users" is wider in APAC than many teams expect. The winners will be the
teams that treat device fragmentation and enrollment security as first-class engineering
problems, using a dedicated orchestration layer to bridge the gap.

## 7. How Corbado Can Help You

For financial institutions in Japan, the
[transition to passkeys](https://www.corbado.com/blog/user-transition-passkeys-expert-strategies) is no longer a
"UX experiment"; it is a critical compliance mandate with immediate impact on fraud rates
and operational costs. However, as the recent rollouts have shown, "shipping passkeys" is
only the beginning. The real challenge lies in managing the fragmented reality of the
Japanese device ecosystem.

Corbado provides a **passkey observability and adoption layer** that sits on top of your
existing identity provider (IDP) and WebAuthn server. We help you bridge the gap between
"spec compliance" and "real-world success."

### 7.1 Stop Flying Blind: Full Forensic Visibility

Most banks have sophisticated anti-fraud telemetry but zero visibility into the
"frontend-focused" journey of a [passkey login](https://www.corbado.com/blog/passkey-login-best-practices).

- **The Problem**: Your logs might show a "failed login," but they won't tell you if it
  was a documented Android 14 system bug, a Samsung Pass conflict, or a user cancelling
  because the UI was confusing.
- **The Corbado Solution**: We provide auth-native observability that tracks
  prompt-to-completion rates by specific device model, OS version, and browser. This
  includes monitoring the usage of
  [hardware security keys](https://www.corbado.com/blog/best-fido2-hardware-security-keys) vs. synced passkeys,
  allowing you to see exactly which factor provides the highest success rate for your
  specific user segments.

### 7.2 Unified Adoption Policy: Synced & Hardware-Bound

A mandatory rollout requires a strategy that adapts to the user's hardware and environment
in real-time.

- **The Problem**: Forcing a single authentication path (like synced passkeys) can fail in
  corporate environments where cloud sync is disabled or on OEM devices with broken
  credential managers.
- **The Corbado Solution**: Our adoption intelligence allows you to define flexible
  policies that seamlessly integrate both platform passkeys and
  [hardware security keys](https://www.corbado.com/blog/best-fido2-hardware-security-keys). You can offer
  [YubiKeys](https://www.corbado.com/glossary/yubikey) as a premium or high-assurance fallback for users on
  problematic devices or in restricted networks, ensuring 100% reach without increasing
  support overhead.

### 7.3 Automated & Secure Recovery

The move to passwordless increases the stakes for account recovery, as there is no legacy
fallback for lost devices.

- **The Problem**: High-friction recovery flows drive users to expensive human-led branch
  calls or force the reintroduction of insecure SMS/email resets.
- **The Corbado Solution**: We integrate external recovery solutions and processes based
  on user behavior. This includes explicitly requesting high-assurance recovery factors,
  such as [hardware security keys](https://www.corbado.com/blog/best-fido2-hardware-security-keys) or other
  custom procedures defined by your system, ensuring that even if a user loses their
  primary device, they can regain access through verified methods that meet Japanese
  regulatory standards without manual intervention.

### 7.4 Safe Migration with Kill Switches

Removing the password fallback is the end goal of the 2025 regulatory roadmap, but doing
so without data is a terminal risk for user access.

- **The Problem**: A mandatory rollout that hits a regression on a specific Sony or Sharp
  device model can result in thousands of immediate account lockouts.
- **The Corbado Solution**: Our platform allows you to pilot different
  [authenticator](https://www.corbado.com/glossary/authenticator) types across your user base and phase rollouts
  by technical environment. If a specific device/OS combination starts failing, you can
  deactivate it instantly with a device-level kill switch without an app store update.

### 7.5 Maintain Total Control

We understand that for Tier-1 banks, owning your WebAuthn server and user data is
non-negotiable for regulatory and security reasons.

- **The Corbado Approach**: **We are not an IDP.** You keep your existing stack, your user
  database, and your security policies. Corbado adds the "intelligence and visibility
  layer" on top, providing the same forensic visibility into passkey and
  [security key](https://www.corbado.com/glossary/security-key) journeys that you expect from your existing SIEM
  and anti-fraud tools today.

### 7.6 Get Started Today

The transition to a phishing-resistant, passwordless future in Japan is inevitable, but it
doesn't have to be a support disaster. By combining forensic observability with
intelligent adoption strategies, you can meet the FSA's mandatory requirements while
maintaining a seamless experience for every user, regardless of their device.
[Contact us](https://www.corbado.com/contact) to find out how to integrate our SDKs into
your existing solution or plan your rollout.

## 8. FAQ Appendix: What Japanese Users Actually Ask

The questions below reflect the most common passkey-related queries from Japanese users,
derived from search trends, support ticket patterns, and community discussions. By
phrasing these as natural questions, we address the real intent and confusion users face
during the transition.

### 8.1 Errors & Troubleshooting

#### パスキーでログインできない場合はどうすればいいですか？ / What should I do if I can't login with a passkey?

Common causes: device/browser mismatch (passkey created on specific device won't appear
mobile), [WebView](https://www.corbado.com/blog/native-app-passkeys) limitations in apps, or corporate proxies
blocking traffic required for cross-device authentication. Try using the same
browser/profile where you registered, or open the site in a full system browser instead of
an in-app browser.

#### 「問題が発生しました」というエラーが表示されるのはなぜですか？ / Why am I seeing an "A problem occurred" error?

This generic error typically indicates a communication failure between the browser and the
[platform authenticator](https://www.corbado.com/glossary/platform-authenticator). Ensure your OS and browser are
up to date (e.g., latest [iOS](https://www.corbado.com/blog/webauthn-errors) or Android with updated Play
Services).

#### パスキーでアカウントに入れない時の対処法は？ / How do I fix access issues when I can't enter with a passkey?

If you can't access your account, check: (1) you're using the same device/cloud ecosystem
where the passkey was created, (2) screen lock (biometric/PIN) is correctly set up on your
device, (3) the service hasn't reset its security settings. If completely locked out, use
the service's account recovery flow or contact support.

#### よくあるパスキーのエラーとその解決方法は？ / What are common passkey errors and how do I fix them?

General passkey errors often stem from using outdated browsers or unsupported operating
systems. The most common error is `NotAllowedError`, which can mean anything from a user
cancel to a missing credential - see our comprehensive
[WebAuthn errors](https://www.corbado.com/blog/webauthn-errors) guide for a full breakdown of every error type
across browsers, [iOS](https://www.corbado.com/blog/webauthn-errors) and Android. Ensure you are using a modern
browser (Chrome, Edge, Safari) on a recent OS version. Also check that your device's clock
is synced and you are not in Incognito/[Private mode](https://www.corbado.com/blog/passkeys-incognito-mode),
which can sometimes interfere with passkey storage or retrieval.

#### パスキーが反応しない、または認証が始まらないのはなぜですか？ / Why is my passkey not responding or starting authentication?

If the passkey prompt doesn't trigger: verify Bluetooth is enabled (mandatory for
cross-device/[QR code](https://www.corbado.com/blog/qr-code-login-authentication) flows), check that the site is
using HTTPS, and ensure no browser extensions (like ad blockers or password managers) are
conflicting with the WebAuthn call. Restarting the browser or device often resolves
temporary stalls.

#### パスキーの認証画面が表示されないのはなぜですか？ / Why is the passkey authentication screen not appearing?

The system passkey dialog may not appear if: you are in a
[WebView](https://www.corbado.com/blog/native-app-passkeys) (in-app browser) that doesn't support WebAuthn, the
platform Credential Manager is disabled, or the passkey exists in a different profile. On
Android, verify that Google Play Services is running and the correct Google account is
selected in the passkey UI.

#### パスキーの認証中に画面がくるくるして進まないのはなぜですか？ / Why is the passkey screen stuck spinning or loading?

The "spinning" state often means the browser is waiting for a connection to the
[authenticator](https://www.corbado.com/glossary/authenticator) device via Bluetooth (for cross-device flows) or
waiting for user interaction. If using a local passkey, the biometric prompt might be
hidden behind another window or another prompt is still open.

#### 「操作が中断されました」というエラーはどういう意味ですか？ / What does the "Operation was interrupted" error mean?

This error appears when the flow is cancelled explicitly by the user, times out, or loses
focus. Retry the authentication immediately. Ensure you complete the biometric
verification prompt quickly and avoid switching apps or letting the screen sleep during
the process. Nomura Securities users on Android have reported this error frequently since
the Nov 2025 mandatory rollout, often linked to device/OS compatibility issues
([detailed analysis](https://reiwabook.blog/nomura-pass-key-error/)).

#### 「NotAllowedError」が表示されるのはなぜですか？ / Why am I seeing a "NotAllowedError"?

The "[NotAllowedError](https://www.corbado.com/blog/webauthn-errors)" typically occurs when the user cancels the
biometric prompt, the device's screen lock is disabled, or there's a system-level
permission issue. WealthNavi also notes that "[NotAllowedError](https://www.corbado.com/blog/webauthn-errors)" is
frequently the only feedback the OS provides, making remote
[troubleshooting](https://www.corbado.com/blog/passkey-troubleshooting-solutions) difficult.

### 8.2 Device Changes & Lifecycle

#### 機種変更をする時、パスキーはどうすればいいですか？ / What happens to my passkeys when I change devices?

**Synced passkeys** (iCloud Keychain,
[Google Password Manager](https://www.corbado.com/blog/how-to-use-google-password-manager)) transfer
automatically when you sign into your new device with the same cloud account.
**Device-bound passkeys** (e.g., [YubiKey](https://www.corbado.com/glossary/yubikey) or non-synced platform
credentials) do not transfer. You must register a new passkey on the new device _before_
wiping the old one.

#### パスキーを安全に削除するにはどうすればいいですか？ / How do I safely delete a passkey?

Proper deletion is a two-step process: (1) Remove the passkey from the **service's**
security settings page to prevent it from being requested, and (2) delete the credential
from your **device's** passkey manager (iCloud Keychain, Google Password Manager, etc.) to
clean up your local storage.

#### 新しいスマホにパスキーを引き継ぐことはできますか？ / Can I transfer my passkeys to a new smartphone?

"Transfer" is a misnomer for passkeys. You typically "sync" them via the cloud
(Apple/Google) or "register new" ones. If switching ecosystems (e.g., iPhone → Android),
you cannot migrate existing passkeys. You must log in (using password or cross-device
auth) on the new phone and create a brand new passkey there.

#### パスキーの設定方法は？ / How do I set up a passkey?

Setup generally follows this flow: (1) Log in to the service, (2) Go to Account/Security
settings, (3) Select "Create Passkey", (4) When the system prompt appears, perform
biometric/PIN verification. Ensure your device has a screen lock (FaceID, Fingerprint, or
PIN) enabled, as passkeys require this underlying security.

#### 複数の端末で同じパスキーを使うことはできますか？ / Can I use the same passkey on multiple devices?

For synced passkeys, one registration covers all your devices in that ecosystem (e.g., all
your Apple devices). For cross-ecosystem usage (e.g., iPad + Windows PC), you should
register a passkey on _each_ platform to avoid relying on QR codes for every login. Most
services allow [multiple passkeys per account](https://www.corbado.com/faq/multiple-passkeys-per-account).

#### パスキーが入ったスマホを紛失した場合はどうなりますか？ / What happens if I lose the device containing my passkey?

If you lose a device with your only passkey: use a fallback method (password, backup
codes, email magic link) if available. If the service is "passkey-only," you must go
through their [identity verification](https://www.corbado.com/blog/digital-identity-guide)/recovery process.
Using synced passkeys reduces this risk since the credential exists on your other devices
or cloud account.

#### 本人が亡くなった後、パスキーのアカウントはどうなりますか？ / What happens to passkey accounts after the owner passes away?

Passkeys are strictly bound to the user's personal cloud accounts, making digital
inheritance extremely difficult. Unlike a written-down password, a family member cannot
just "use" a passkey. Services are beginning to establish legal processes for account
access by next of kin, but this remains a complex friction point.

### 8.3 Platform & Device

#### Androidでパスキーを使う際の注意点はありますか？ / Are there specific things to know about using passkeys on Android?

[Android passkeys](https://www.corbado.com/blog/how-to-use-google-password-manager) rely on
[Google Password](https://www.corbado.com/blog/how-to-use-google-password-manager) Manager and Google Play
Services. Experience can vary by manufacturer (Samsung, Sony, Sharp, etc.). For
cross-device (QR) flows, use the system-provided scanner or Google Lens if the OEM camera
app fails to recognize the FIDO [QR code](https://www.corbado.com/blog/qr-code-login-authentication).

#### iPhoneでパスキーはどう機能しますか？ / How do passkeys work on iPhone?

Passkeys on iPhone are integrated into [iCloud Keychain](https://www.corbado.com/glossary/icloud-keychain). They
work consistently across iOS and macOS devices signed into the same Apple ID. Ensure
"[iCloud Keychain](https://www.corbado.com/glossary/icloud-keychain)" and "AutoFill Passwords & Passkeys" are
enabled in your Settings.

#### Windowsでパスキーを使うにはどうすればいいですか？ / How do I use passkeys on Windows?

[Windows 11](https://www.corbado.com/blog/passkeys-windows-11) provides native passkey management via
[Windows Hello](https://www.corbado.com/glossary/windows-hello). Passkeys can be stored locally (protected by
Face/Fingerprint/PIN) or synced via a browser profile (e.g., Google Account in Chrome). On
corporate PCs, IT policy may restrict [Windows Hello](https://www.corbado.com/glossary/windows-hello) usage,
forcing reliance on mobile-device auth (QR code) or security keys.

#### 高齢者でもパスキーは使いこなせますか？ / Are passkeys suitable for elderly users?

Elderly users often struggle with the concept of "no password" or the mechanics of QR code
scanning. While newer senior-friendly smartphones running modern Android may technically
support passkeys, the UX barrier is high. Family assistance is often required for setup.
Services should strictly maintain
[alternative login methods](https://www.corbado.com/faq/passkeys-fallback-options) for this demographic.

### 8.4 Concepts

#### そもそも「パスキー」とは何ですか？ / What exactly is a "passkey"?

A passkey is a secure digital key stored on your device that replaces a password. Instead
of typing a secret, you unlock your device (face, finger, PIN) to prove it's you. The
website never sees your private key, making passkeys resistant to leaks and phishing.

#### パスキーはパスワードよりも本当に安全ですか？ / Are passkeys really more secure than passwords?

Passkeys are significantly more secure than passwords because they are
**phishing-resistant** (cannot be tricked into logging into a fake site) and **unique**
(no reused credentials). However, security depends on the initial enrollment: if an
attacker has your password, they could potentially register their own passkey before you
do.

#### パスキーを使うことのデメリットやリスクはありますか？ / Are there disadvantages or risks to using passkeys?

Main disadvantages: (1) **Device dependency**: if you lose access to your cloud account or
devices, lockout risk is real; (2) **Shared device friction**: passkeys are personal and
don't work well on shared family/public computers; (3) **Account aggregation issues**:
account aggregation services (like MoneyForward and others) that rely on legacy
integration methods may face connectivity challenges if a bank switches to passkey-only
without offering a dedicated API; (4) **Corporate network blocking** of cross-device
protocols.