Efforts to spread passwordless in Yahoo! JAPAN
summary
Yahoo! JAPAN replaces passwords with SMS one‑time codes and WebAuthn, first shipping WebAuthn on Android Chrome in 2018 and SMS auth in 2017, adds SMS one‑time‑code suggestion via navigator.credentials.get and browser autocomplete, and implements QR‑code device linking for credential transfer so new devices inherit credentials without reconfiguration. Reported outcomes: account password use falls ~25%, phishing/illegal access declines, authentication typically completes in 3–8 seconds and 88% of biometric logins finish under 10s, and cross‑device usability improves.
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chapters (18)
- 0:00Introduction to passwordless efforts
- 1:05Yahoo Japan services and user base
- 2:09Password-related security risks
- 4:36User password habits and issues
- 5:43Benefits of passwordless authentication
- 7:28Three major passwordless actions
- 8:12SMS authentication method
- 11:00Two-factor authentication challenges
- 12:05FIDO authentication with biometrics
- 13:38Passwordless progress timeline
- 14:49Device dependency challenges
- 15:52Registering multiple authentication methods
- 16:55FIDO sync and cross-device use
- 18:40Disabling password function
- 20:06Passwordless account registration
- 20:47Results and user adoption metrics
- 21:55Authentication method comparison
- 22:59Conclusion and future outlook








