It’s midnight. I’m on a business trip in Cupertino, California and after sending off a few final emails, I change into my pajamas, and then it hits me: I’ve forgotten my toothbrush. This is not the first time I’ve done this and most of the time, when I do, I swing by the front desk and grab one. But when it’s really late and I’m in my pajamas, I’m a little less inclined to head downstairs to model my choice in sleepwear for the folks still at the hotel bar. So I call the Aloft Hotel’s front desk for room service, and a few minutes later open my door to get my toothbrush from Botlr, the hotel’s robotic butler.