Google prompts is similar to Duo Push, one of the authentication methods available for Duo MFA. When you sign in to a new device or browser, Google can send a confirmation prompt to mobile devices where you're already signed in.
Any Android phone signed in to your Google Account will receive Google prompts.
To receive Google prompts on iPhone (5S and up) or iPad, you must be signed in to your Google account on one of the following apps:
- Gmail
- YouTube
- Google
- Photos
- Ad Words
- Smart Lock
Please note that this authentication method requires a network connection on the mobile device where you intend to receive the prompts.
Important: If you receive a sign-in prompt when you are not trying to sign in to your Google account, tap No, don't allow.
Learn more about Google prompts at Google Account Help.