The 6-digit code is a One-Time Password (OTP) used for Two-Factor Authentication (2FA) or identity verification. Google utilizes two primary delivery methods for these codes:
When signing into Gmail on a temporary or public computer, always use an Incognito window. This prevents your credentials and session cookies from being saved to the local hard drive. 6 digit verification code gmail portable
If you are traveling and worried about losing your phone or having no signal, this is the definitive backup plan. The 6-digit code is a One-Time Password (OTP)
While Google still offers SMS verification as a backup, the industry has recognized that a code sent via voice or text is no longer the apex of security. 6 digit verification code gmail portable