Time-based One-time Password algorithm (TOTP)Chris Yuan·Oct 21, 2020·1 min readBasic Time-based One-time Password algorithm TOTP: Time-Based One-Time Password Algorithm, RFC 6238 Authenticator FreeOTP Google Authenticator Authy Microsoft Authenticator Article 為什麼我拋棄 Google Authenticator 改用 1Password 管理 OTP token The Best Two-Factor Authentication App