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A face is a username, not a password. I can take a picture of you and hold it up in front of the webcam. And my picture will work every time unless you decide to get surgery.

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Exactly,...the user is identified and then requested to enter a password. You are identifying the user, then you proceed to ask them a password. I.e. Identifying the user is something you are, then asking them for a password is something you know.

There's no improvement in security from asking for a face rather than a username.

What are the reasons? Genuinely interested as I'd like to understand in more detail.

For the same reason that thumbprints are usernames, not passwords: http://blog.dustinkirkland.com/2013/10/fingerprints-are-user...

Previous HN discussion: https://news.ycombinator.com/item?id=6477505

I'm confused. I never stated that a users face should be used as a password. I was suggesting that their face (or other bio-info) be their username. Am I missing something?

"I was suggesting that their face (or other bio-info) be their username."

What problem does this solve?

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