Step-by-Step · All Platforms · Ranked by Security
| Method | Security | Cost |
|---|---|---|
| Hardware Key | Highest | $25-50 |
| Authenticator App | High | Free |
| Push Notification | Good | Free |
| SMS Code | Low | Free |
| Email Code | Lowest | Free |
SMS vulnerable to SIM-swapping. Use authenticator app minimum.
| App | Backup | Multi-Device |
|---|---|---|
| Authy | Yes | Yes |
| Google Auth | Yes | Limited |
| 1Password | Yes | Yes |
| Bitwarden | Yes | Yes |
| Rule | Why |
|---|---|
| Save codes when enabling | Only way back if you lose phone |
| Store in password manager | Encrypted and backed up |
| Never screenshot on phone | Compromised phone = compromised codes |