I thought Face ID made a 3D scan of your face in order to unlock?
If that’s the case why does mine unlock in the mirror?
If that’s the case why does mine unlock in the mirror?
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iPhone X Face ID mirror unlock
- Thread starter Pagemakers
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Not this again.
Do you look 3D in the mirror?
Mirrors reflect light. Infra-red is light.
It sees your face, not a flat plane.
Do you look 3D in the mirror?
Mirrors reflect light. Infra-red is light.
It sees your face, not a flat plane.
Ah ok. Just tried with a full screen screenshot of my face on a large iPad Pro and it doesn’t unlock which is good.
I thought it actually measures say the minute distance between various features on your face. Those distances in a mirror would all be the same single distance so that’s why I was surprised it unlocked.
I thought it actually measures say the minute distance between various features on your face. Those distances in a mirror would all be the same single distance so that’s why I was surprised it unlocked.
No, think about how it measures distance. It can’t “see” the mirror, it can only see you.
As far as it is concerned there is no flat surface, just your real face in front of it.
An iPad screen however is of course simply a flat surface.
They're not the same distance because they don't stop at the mirror, they reflect off the mirror and continue to the actual 3D surface of your face.
Yeah best way to imagine it is to point a laser pointer at your face through a mirror.
The red dot should be on your face rather than on the glass itself.
The red dot should be on your face rather than on the glass itself.
Okay so I watched this video
I’m thinking pretty much everything in it is BS.
Then I tried to unlock my X by pointing it at my reflection in the mirror and it worked. Am I missing something here? How is it possible?
I’m thinking pretty much everything in it is BS.
Then I tried to unlock my X by pointing it at my reflection in the mirror and it worked. Am I missing something here? How is it possible?
I think the bigger question is, why wouldn't it work in a mirror?
I thought it needs a 3D image?
[doublepost=1511454676][/doublepost]
I had the phone facing the mirror directly. I suppose there could be a technical reason for it to work.
Why would you think that a mirror reflection would NOT be 3D (and scan-able as such)?
So, video is pointless, as that should work.
Similar in principle to reading a bar scan label upside-down. The scanner cares little about the position, as long as the image is viewable.
So, video is pointless, as that should work.
Similar in principle to reading a bar scan label upside-down. The scanner cares little about the position, as long as the image is viewable.
Face ID will scan your face as a 3D model through a mirror.
Thats how light and reflections work.
Taking a break from the non-stop eating and drinking to answer this ...
We’ve discussed this several times ... it is using a 3D source because it’s not scanning the image on the surface of the mirror it’s tracing the IR as it bounces off the mirror all the way to the reflected object.
Think of it this way: If you shine a laser pointer at a mirror it doesn’t stop at the mirror, it bounces and continues till it strikes an object in 3D space and the path has different lengths depending on what part you shine it on in the mirror (ie, it retains depth)
There is depth in the reflection. It's not like the image is painted on the mirror. The image in the mirror is 3 dimensional.
The phone is reading the infrared light reflected by the mirror, not the mirror itself. This is true of any surface.
Am I going mad or did my sad trombone and green sleeves video posts get deleted?
[doublepost=1511462910][/doublepost]Oh I see what’s happened. The threads have been merged.
[doublepost=1511462910][/doublepost]Oh I see what’s happened. The threads have been merged.
Old thread, but couldn't help myself after reading all the non-sense...
It doesn't work because your face will be in reverse in the mirror. So if you have a mole on your left cheek, FaceID will detect it in the right cheek. The same will happen will all your facial features, hence, faceID will determine this is not the right face.
Get it???
It doesn't work because your face will be in reverse in the mirror. So if you have a mole on your left cheek, FaceID will detect it in the right cheek. The same will happen will all your facial features, hence, faceID will determine this is not the right face.
Get it???