Authenticator codes are "Time-based One-Time Passwords" (TOTP).
If you rely solely on SMS, you are stuck if you lose cell service or switch SIM cards while traveling. Here is how to achieve true portability: 1. The Google Authenticator "Export" Feature 6 digit verification code gmail portable
Go to your Authenticator app settings and select "Time correction for codes." Safety Tip: The "Backup Codes" Fail-Safe 6 digit verification code gmail portable
When you log into Gmail from an unrecognized device, Google asks for more than just your password. It sends a one-time password (OTP)—usually six digits—to verify your identity. Traditionally, this is delivered via SMS or the Google Authenticator app. 6 digit verification code gmail portable