Imagine you’re a guest at a hotel. You realize you forgot to pack a toothbrush, so you call the front desk to have a fresh one sent up. A few minutes later, the room’s phone rings, and a voice alerts you to the arrival of a bellhop. Open the door, and there’s your new toothbrush. But instead of a human bellhop handing it over, there’s a three-foot-tall robot in your doorway.

Read the full article at wired.com