How Face ID Works... Probably - Computerphile

Unlocking a phone with a face? Why doesn't the phone need thousands of example pictures before it works? Dr Mike Pound explains how it might work...

This video was filmed and edited by Sean Riley.

[xaostek]

0:16 "If you want to unlock a face with your phone..." Alright, I'm interested.

[dermathze]

I've never unlocked my face with my phone, but now I'll give it a try.

[necromancerpencil]

"Bring in Sean and everything's ruined."
Classic Sean.

[orjihvy]

This channel raises really interesting questions along with great explanations!

[DerUnbekannte]

mike consistently makes the best computerphile videos, great job once again!

[aamirbangash]

This guy has some serious teaching skills

[CLHLC]

0:37 Shrug shoulders... 'Mike!?' | My new favorite answer to any question I don't have the answer to! Thanks Dr. Mike!

[MrDaanjanssen]

I see a "Computerphile the card game" coming out soon

[LeMustache]

I like how only Max is a "negative value"

[TheNightquaker]

I do, indeed, like to unlock my face with my phone. To replace my internal batteries, mostly!

[goranjosic]

Dr. Mike P. is so good at explaining stuff!! I have learn so much watching this channel in last few years!

[zss]

7:44 best face I've seen Dr. Pound make!

[romakamal]

I got massive The Office vibe from this video

[himselfe]

Interestingly no discussion of how it differentiates between real people and images of those people. I assume it has something to do with the phone's ability to identify depth, but it would be interesting to see a discussion of photos/images as an attack vector for this kind of security.

[rich]

What people fail to grasp is, the neural network is not told HOW to classify things, they are simply handed data and it figures out on its own the most optimal way to sort that data in order to produce the highest score, whatever that score is.

[nicktheoregonian]

Would fingerprint sensors on phones or other security devices work in a similar manner to this? Those have been around for a while longer I think, so maybe not?

[shineq_]

Is the 9:41 video length intentional, considering it's about Apple?

[tobiasschachner]

why does a Picture in front of the detecting camera not unlock the phone?
does it recognize the shadows and somehow the third dimension out of a two dimensional picture?

[apporvaarya]

Your accent, your knowledge and way to teach stuff is incredible.😍😍

[Bigjunior]

Well, I could unlock my brother's phone in bad lighting for the first few weeks.
Now it's not even possible for me.
My guess is, that with each unlock using FaceID Apple allows less and less differences between the points in space you successfully unlocked the phone with.