Comparison
Passkeys vs TOTP: stronger does not have to mean harder
Learn why passkeys resist phishing, where authenticator codes still help, and how to migrate without losing recovery options.
Passkeys use a different security model
A passkey is based on public-key cryptography. Your device keeps a private key, while the service stores a corresponding public key. The private key is not sent to the service during sign-in, and the browser checks the website identity before approving authentication.
TOTP uses a shared secret. Both the authenticator and service must possess that same secret. This design is widely compatible and works offline, but a user can still be tricked into typing a current code into a phishing page.
Why passkeys can be easier in daily use
On a supported device, a passkey sign-in typically uses the same biometric or device PIN that unlocks the device. There is no six-digit code to read and retype. Synced passkeys can also make device replacement straightforward when the platform account is protected well.
The recovery model deserves attention. Understand whether a passkey is device-bound or synced, enrol more than one option for critical accounts, and keep the platform account that synchronises passkeys especially secure.
- Use passkeys on the exact, verified service domain.
- Keep a second device or hardware key for critical access.
- Review the service's fallback methods so SMS does not silently become the weakest link.
TOTP remains a valuable bridge
Many services do not yet support passkeys, or offer them only alongside passwords. TOTP remains broadly interoperable and does not require a particular hardware ecosystem. It is still a sensible choice over password-only access and generally preferable to SMS.
Security is not a single global setting. Use phishing-resistant credentials where available, TOTP where necessary, unique passwords everywhere else, and recovery methods that you have deliberately secured.