This screen is only for you. Put in your Gmail and we will send you a code.
Only your own address gets a code. Any other address sees the same reply and gets nothing.
The code works once, for 10 minutes, in this browser only. You stay signed in on this device for 14 days.
Your fingerprint or face, on a device where you added one. No email needed.
Each code works once. Using one emails you.