Two-factor authentication (2FA) is a way of verifying a user’s identity by asking for exactly two pieces of proof, such as the password to an online account (the first factor) and a one-time …

With 2-Step Verification, or two-factor authentication, you can add an extra layer of security to your account in case your password is stolen. After you set up 2-Step Verification, you can …

多数人熟悉基于短信的 2FA 认证系统。在这类系统中，应用程序会在用户登录时向其手机发送一个数字码。用户必须输入密码和验证码才能继续。仅输入其中一项无法通过 身份验证。 2FA 是 …

The Google Authenticator app can generate one-time verification codes for sites and apps that support Authenticator app 2-Step Verification. If you set up 2-Step Verification, you can use …

How 2-Step Verification helps protect your personal info The personal information in online accounts is valuable to hackers. Password theft is the most common way accounts are …

If you've lost access to your primary phone, you can verify it’s you with: Another phone number you’ve added in the 2-Step Verification section of your Google Account. A hardware security …

2-Step Verification makes your account more secure. If you turn off 2-Step Verification, you remove an additional layer of security, which can make it easier for someone else to access …

This page addresses issues with two-step verification not working in the YouTube app and provides solutions for Google account users.

Go to Menu Security > Authentication > 2-step verification. (Optional) To apply the setting only to some users, at the side, select an organizational unit (often used for departments) or …

Passkeys If an admin has enabled skip password on a user's account, they can skip password sign-in challenges and instead use a passkey that incorporates first and second-factor …