3. It’s only there as a last resort
Once you set up your selfie sign-in, odds are, you’ll never actually think about it again or have a reason to use it. Anytime you sign into your Google account, you’ll still use your standard password, passkey, and any two-factor authentication you’ve placed on the account.
The selfie path is there only in the event that all those regular methods are for some reason failing you. It’s unlikely, but it’s not impossible. And with your selfie video saved, if that situation ever arises, you’ll have an easy alternate way to prove your identity — by submitting a live on-the-fly selfie video and allowing Google to match it with your original saved one — so you can avoid getting locked out.
4. The selfie sign-in is designed to be both private and secure
When it comes to matching a saved selfie video and a new live one, Google requires different movements to verify validity and avoid any impersonation attempts.