2FA Live ONLINE · Help
2FA help, without the guesswork
Understand your authenticator, fix a rejected code, and choose who can access it. Clear instructions for the moments that matter.
These guides are for reading. To enter a key or manage saved codes, open the authenticator.
- Start here
How to use a TOTP secret key
Understand the difference between a secret key and a code, then generate a TOTP code with 2FA Live ONLINE.
- Troubleshooting
Why is my 2FA code invalid?
Check an expired code, an incorrect device clock, the wrong secret, and mismatched TOTP settings in a practical order.
- Sharing
Share links: expiry, lifetime, and revocation
Create a 2FA share link, choose an expiry, understand lifetime access, and revoke links created while signed in.
- Accounts and privacy
Keep your account and authenticator keys safe
Understand browser-only generation, server-stored vaults, recovery limits, and sensible ways to protect authenticator secrets.
New to TOTP? Start with the secret-key guide. If you are locked out of an account at another service, use that service’s recovery process. This tool cannot recover a lost setup key.