A fingerprint sensor actually works a lot like a touch screen, just at a much smaller scale.
To pre-empt the question, under-screen fingerprint scanners don't work like this.
They either use an optical sensor or, more interestingly, ultrasound - basically like goddam sonar under your screen.
Dan Hollick
@DanHollick
design engineer @tailwindcss. writing a book about software at makingsoftware.com prev: @raycastapp