I've been playing the new Doom game, and one of their new variants on the old "find the blue key card to unlock the blue door" puzzle is now "Find the handprint to unlock the biometric console". Of course, it's Doom, so you find the dead technician's body, rip off the dead guy's arm, carry it to the console, and slap it on the handprint scanner. Same thing as the "find the blue key" puzzle from a mechanics perspective.

Wonder how long it'll be before someone breaks into a system that way in real life? I wonder if the Apple watch keeps functioning if the wearer dies.