No biometric information is saved – exact match vs probabilistic

“We don’t save any biometric information. We save a formula that will describe your face where to look for interesting things and what that result should be. We save that. We call it a ZeroMap. And then, when you come back to authenticate, your face is compared to your ZeroMap, and if the result of that formula gives the exact same hash output as what was initially recorded, then it’s a match. But it has to be exactly the same output. If it isn’t, it fails.

Very different. Traditional face… take a picture, they save it, they take another picture, and then they do a difference comparison to see how similar is this earlier photo of Dave to this brand new photo of Dave. It’s a probabilistic sort of approach.”