It seems like the shape of your fingerprint changes drastically when they’re pruned up. The skin becomes elevated and makes creases that don’t follow the shape of the fingerprint at all. I’d imagine that a fingerprint scanner would have trouble reading the actual fingerprint underneath the pruniness, but the one on my phone recognizes it instantly anyways. How does it work?
In: Technology
You are flattening out the big wrinkles, but the little lines are the shape of the skin, so they don’t flatten as much.
When you press down on the flat surface of the scanner your skin flattens out.
Also, it isn’t scanning and storing the exact shape of your fingerprint lines, but just points of interest and the relative locations and distances between them. Which are all data that still stay intact enough to fall within the tolerance the algorithm wants.
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