https://www.cnet.com/roadshow/news/2019-hyundai-santa-fe-fingerprint-sensors/

Some vehicles allow different key fobs to carry different settings, whether it's seat position, radio favorites or climate control temperature. Hyundai's fingerprint system offers the same level of personalization, but instead of being linked to a fob, it's linked to the driver's fingerprint. You may grab the wrong remote by accident, but you're not going to grab the wrong fingerprint.

Theoretically, faking a fingerprint could still grant access to the car -- or could it? According to Hyundai, the system measures capacitance across parts of the fingertip, linking that signature to the print itself. Thus, if somebody shows up at the car with a fake fingerprint, the car should be able to tell it's not the actual driver. The odds that Hyundai's tech will misrecognize a print are 1 in 50,000, the automaker says.