3 min read
SMS codes
- Work on any phone
- Can be intercepted by SIM swaps
- Depend on your number staying yours
Authenticator apps and passkeys
- Codes are generated on your device, nothing travels by SMS
- Immune to SIM swaps
- Need a backup if you lose the phone
Verdict
Use SMS to sign up if you must, then switch login codes to an authenticator app or passkey.