When signing in to Google via PC browser w/ 2pt verification, how does Google know that you are connected via wifi to send you the tap only confirmation, or if not, give you other options to verify?

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When signing in to Google via PC browser w/ 2pt verification, how does Google know that you are connected via wifi to send you the tap only confirmation, or if not, give you other options to verify?

In: Technology

The tap only works on mobile networks too. Since you’re logged in using your phone they just send a push notification. Your phone is constantly reporting to Google. The logic is simple, if you have been offline more than X hours use the other option.