Information such as user device, location, login time will appear in this message. Users should pay attention to reading and make sure it is correct with the device that they are using to access the account.
Only those who use SMS-based 2SV methods are invited to join this program. Users can reject Google invitations and continue using the SMS code if desired.
Those who use the security key will not be invited, because this is said to be a safer, more secure method. Google said that they will re-invite users to this program after 6 months. IOS users must have a Google Search app installed on their device to see the 2SV login message.