Google Prompt is aimed at enterprises where employees are using Google apps, and thus need a Google account to access their work email, work docs, etc.
In a blogpost Google wrote, “There are multiple ways your end users can approve sign-in requests via 2SV—by tapping a Security Key, by entering a verification code sent to their phone or, starting today, by approving a prompt like the one below that will pop up on their phone.”
Employees can now choose the Google Prompt option during the two-step verification as an alternative to the text message OTP option. Users need to go to security settings, then signing in to Google, and in the 2-Step Verification tab, they will see the option to add Google Prompt Feature.
The Prompt-In feature will ping an alert to a user when they are about sign-in on another device. Users can then go with a Yes or No option, when prompt. Users won’t have to keep on typing a new OTP every time they sign-in via Google on a new desktop or mobile device.
Google points out currently admins can’t have Security Keys and Google prompt enabled at the same time. Also Android users will need updated Google Play Services to use Google prompt, and iOS users will need the Google Search app installed on their phone to use Google prompt.
Google says, the feature is being rolled out gradually and make take more than three days to appear for all users.