The MS authentication process presents a 2 digit number on the client device, and triggers the app to request the user enter the same 2 numbers, showing an appr

The MS authentication process presents a 2 digit number on the client device, and triggers the app to request the user enter the same 2 numbers, showing an approximate geographical location of the client request. It seems totally proprietary but also pretty benign. If you’ve already got Outlook or Teams on your device, then I don’t think you’re any worse off. I despise it myself because each time I have to Auth anything I have to approve it. Having a separate device could start to get annoying given this. Your call though.