2FA & TOTP Guides

Clear explanations for authenticator setup, TOTP failures, and the security boundaries a generator cannot cross.

Troubleshooting

Start with the problem you have

Check automatic time, a fresh code, the exact secret, and TOTP parameters before moving to provider recovery.

Use the local verifier when you have an authorized secret and candidate code and need a precise match result.

Learn what stays local, what optional analytics can see, and which device risks remain outside the site.

Generate live codes, create enrollment secrets, build QR images, or verify a known TOTP code.