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Apple is sharing your facial wireframe with apps

washingtonpost.com

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Re: Apple is sharing your facial wireframe with apps

#21
post #18

Tell me again how FaceID will be "so much more secure" than TouchID - when Apple itself is sharing those 3D facial profiles with third-party vendors (and governments). In practice , fingerprint readers should still remain significantly more secure than any facial recognition technology.

Apps get a coarse depth map - this cannot be used to replicate your face in perfect 3D, nor can it be used to bypass FaceID.

Re: Apple is sharing your facial wireframe with apps

#22
post #16
post #13

I've been playing with the TrueDepth Camera APIs on the iPhone X. Some things I've noticed: 1) The ARKit "Face Mesh" seems to be a standard model that is scaled and skewed to fit your face (for example, it ignores glasses, still works if you put your hand in front of your face, etc). It is _not_ a 3D scan. 2) The "TrueDepth" data is not really all that granular. It seems similar to the depth map you get from the rear…

#3 is mistaken. https://www.imore.com/yes-animoji-uses-truedepth-camera-syst...

I take anything Rene says with a very large grain of salt.

> The reason for the misconception comes from the implementation: The IR system only (currently) fires periodically to create and update the depth mask. The RGB camera has to capture persistently to track movements and match expressions. In other words, cover the IR system and the depth mask will simply stop updating and likely, over time, degrade. Cover the RGB, and the tracking and matching stops dead.

"...likely, over time, degrade."

1) He doesn't know.

2) It's Animoji, so why would it matter if it did degrade? There is already a stock 3D image of the Poop. It simply needs the RGB camera to track where your facial features are.

Re: Apple is sharing your facial wireframe with apps

#23
post #18

Tell me again how FaceID will be "so much more secure" than TouchID - when Apple itself is sharing those 3D facial profiles with third-party vendors (and governments). In practice , fingerprint readers should still remain significantly more secure than any facial recognition technology.

I admit that I am pretty ignorant to the really technical aspects of security but it seems that using authentication data for anything other than authentication is poor practice. I can understand the desire to use facial stuff to make interesting technology but I would prefer knowing that it is only used for the purpose of unlocking my device and nothing else. It seems fingerprints are less interesting for other apps so there wasn't the same motivation to share it.

Am I being an alarmist or is it reasonable to be concerned about this?

Re: Apple is sharing your facial wireframe with apps

#24
post #7

I'm honestly less worried about Apple than others. They've at least made some measures to prove that they are willing to go some distance to protect privacy, even losing ground to competitors in voice recognition. Now thinking about co's like Facebook that not only has access to far more imagery of faces tied to sentiments and moments but have shown time and time again that privacy is a secondary concern AND that the…

The point that the article makes is that Apple aren’t doing much to give users control over third-party access to their “faceprint”, or what it is ultimately used for.

Re: Apple is sharing your facial wireframe with apps

#25
The FaceID camera is infrared and can see in the dark [1].

According to the Post "Once you give it permission, an active app keeps on having access to your face until you delete it or dig into advanced settings. There’s no option that says, “Just for the next five minutes.”"

So a random developer can (kind of) look at us when we turn the light off. Not only that, those cameras work also in the sunlight. You can go on YouTube and search "clothes transparent to infrared". Not much, especially considering that the app is not getting a real image, but still somebody will be uncomfortable with that.

However there also legit and interesting applications for infrared cameras and they've been on sale for a long time. What's changing is the number of those cameras that are getting around.

[1] https://www.macrumors.com/2017/09/13/how-iphone-x-face-id-wo...

Re: Apple is sharing your facial wireframe with apps

#26
post #18

Tell me again how FaceID will be "so much more secure" than TouchID - when Apple itself is sharing those 3D facial profiles with third-party vendors (and governments). In practice , fingerprint readers should still remain significantly more secure than any facial recognition technology.

Apps get a coarse depth map - this cannot be used to replicate your face in perfect 3D, nor can it be used to bypass FaceID.

I'm not a security expert but this seems like are giving out a coarse approximation of my username (that has no password protection). I would think it is significantly easier to break into FaceID starting with the coarse depth map than no depth map at all. But again, I could just be out of my depth on this topic and the difference isn't that big of a deal?

Re: Apple is sharing your facial wireframe with apps

#27
post #19
post #13

I've been playing with the TrueDepth Camera APIs on the iPhone X. Some things I've noticed: 1) The ARKit "Face Mesh" seems to be a standard model that is scaled and skewed to fit your face (for example, it ignores glasses, still works if you put your hand in front of your face, etc). It is _not_ a 3D scan. 2) The "TrueDepth" data is not really all that granular. It seems similar to the depth map you get from the rear…

> 2) The "TrueDepth" data is not really all that granular. It seems similar to the depth map you get from the rear-facing cameras on the "plus" sized models. Here's what the sensor data spits out: https://twitter.com/braddwyer/status/930682879977361408 As @braddwyer himself notes, you can probably get a much better mesh integrating over time. It depends how long it takes to capture a single frame, but I imagine that'…

@braddwyer is me :)

It gives you about 15 fps of depth data

Re: Apple is sharing your facial wireframe with apps

#28
post #16
post #13

I've been playing with the TrueDepth Camera APIs on the iPhone X. Some things I've noticed: 1) The ARKit "Face Mesh" seems to be a standard model that is scaled and skewed to fit your face (for example, it ignores glasses, still works if you put your hand in front of your face, etc). It is _not_ a 3D scan. 2) The "TrueDepth" data is not really all that granular. It seems similar to the depth map you get from the rear…

#3 is mistaken. https://www.imore.com/yes-animoji-uses-truedepth-camera-syst...

I've done some experimenting with it in my own apps.

I was really surprised how well it does even when covering up the IR sensor prior to opening the app.

I don't doubt that they are using the IR data to improve things. But it does "good enough" without.

Re: Apple is sharing your facial wireframe with apps

#29
post #27
post #19

Earlier quoted context omitted.

> 2) The "TrueDepth" data is not really all that granular. It seems similar to the depth map you get from the rear-facing cameras on the "plus" sized models. Here's what the sensor data spits out: https://twitter.com/braddwyer/status/930682879977361408 As @braddwyer himself notes, you can probably get a much better mesh integrating over time. It depends how long it takes to capture a single frame, but I imagine that'…

@braddwyer is me :) It gives you about 15 fps of depth data

Haha, cool! Hi :)

Given the small size of the laser projector, I imagine natural movement from the phone being hand-held would result in significant displacement of the projected dots over a 1s interval? Have you tried integrating the 15 frames to see what it looks like?

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