Interzone is an online authenticator that generates TOTP/OTP codes from a Base32 token directly in the browser. It works with Google Authenticator, Microsoft Authenticator, and other 2FA apps that use standard time-based codes.
The 2FA and TOTP FAQ explains what 2FA means, how a TOTP generator online works, how to choose an authenticator app, why 2FA codes fail, and how to handle Base32 tokens safely.
