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Doppler
Developer tools · doppler.com
Three second factors on offer: security key, authenticator app and email code. The strongest is a security key.
Recommended setup
Security key + app backup
A security key only answers the real site, so it can't be phished. Set up a second method too, so a lost key doesn't lock you out.
KeySecurity keyBest option
AppAuthenticator appSupported
EmailEmail codeSupported
Not offered: approval in an app, hardware token, text message, phone call.
Switch it on
General steps; menu names vary. Doppler's own guide has the exact screens.
- Sign in to Doppler and open your account's security settings. Look for two-step verification or two-factor authentication. Doppler's own guide shows the exact screens.
- Choose authenticator app. A QR code appears.
- Open your authenticator app, add an account and scan the QR code. Type the 6-digit code it shows to confirm.
- Choose security key. Insert a USB key, or hold an NFC key to your phone, and touch it when it blinks. Register a spare key too.
- Save the backup codes. Keep them in your password manager or print them; they're your way back in if you lose your phone or key.