Behind a locked hotel door in New York City, a sushi restaurant operated as if it didn’t exist. With only four seats, no signage, and a strict ban on filming, guests entered using a room key as if ...

We’ve all been there: you’re fumbling through your bag, searching for your car keys, and then—bam!—you remember your trusty key fob is the magical little device that gets you into your car. But wait, ...