What is an authenticator app?

Concerns & risks

You were trying to set up two-factor on your bank, and it recommends an authenticator app instead of texts.

Apps beat SMS for security.

Causes & evidence

An authenticator app generates time-based codes for MFA. See multi-factor authentication.

What to do

1. Install a reputable authenticator.
2. Scan the QR code from the account.
3. Save backup codes.

Common mistakes: Common mistakes: not backing up the authenticator before getting a new phone, which can lock you out. Many apps support backup or transfer. Store backup codes safely. Use a reputable authenticator from the official app store. Never share codes. An authenticator app makes a new six-digit code every 30 seconds, right on your phone, without needing a text message. That makes it harder to steal than a text code. To set one up, go to the account's security settings, choose authenticator app, and scan the QR code shown. Then type in the code to confirm. Save backup codes when offered.

Speed Man tip: Back up or transfer codes before switching phones.

Wrap-up: Makes codes. Scan QR. Save backups.