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The title almost sounds like that they have a meaningful fingerprint ready to open her iPhone... Was that the case? Or do they have a somewhat accurate partial
by vletal 5y ago
The title almost sounds like that they have a meaningful fingerprint ready to open her iPhone... Was that the case? Or do they have a somewhat accurate partial fingerprint? I failed to find recoding of the presentation.
- DangerousPie 5y agoAFAIK iOS actually uses the pattern of veins below the fingertip rather than an image of the fingerprint itself. So I can't imagine this would be enough to unlock an iPhone.
- joecool1029 5y agoYou're sort of not wrong, touchid uses a capacitive sensor vs. a visual/camera sensor which has become more common in other devices. What this means is in theory you're measuring the electrical behavior of the outer layers of skin, and Apple claims goes as far as measuring subdermis. (This is also is why their touchid scanners don't work on wet fingers as the behavior is thrown off). However, they are showing their attack working on a Macbook Pro with touchid, which uses this sort of reader. So it's easier to fake in practice than it is in theory. Whatever material you lift the print off of should have to mimic the capacitive behavior of the finger and this looks like it busts Apple's claim that it can read the lower layers (or it tells us their default sensitivity is set too low for convenience)
- raxxorrax 5y agoI am sure that the touchscreen of a phone could in many cases supply the necessary materials.