> Do you mean if I get in a random car it can tell who I am, or if I get in the car it knows it's seen those fingerprints before and they're allowed to drive th

> Do you mean if I get in a random car it can tell who I am, or if I get in the car it knows it's seen those fingerprints before and they're allowed to drive the car? Personalization for the driver(s). Other cars do it by having the settings tied to the key fob, or just by putting numbered buttons on the door.