Step-by-Step: Setting Up 2-Step Verification for Portable Security
If you are unable to receive a code via the primary method, you can use these "portable" or alternative options: 6 digit verification code gmail portable
Input your password and enter your primary mobile phone number to receive a test 6-digit code via SMS. Switch to an authenticator app immediately
Avoid using SMS for your 6-digit code if you need portability. SIM swapping attacks are common, and international roaming often fails. Switch to an authenticator app immediately. This time limit ensures that even if a
You enter your Gmail password, then open your authenticator app, read the constantly refreshing 6-digit code, and type it into the login screen. The code is valid only for about 30 seconds, after which a new code is generated. This time limit ensures that even if a code is intercepted, it cannot be reused later.
Relying heavily on SMS-based 6-digit codes exposes you to SIM-swapping attacks, where hackers convince your mobile carrier to route your texts to their device. Best Practices for Secure Authentication on the Go