When a man tried to enter his own house, his Nest doorbell got suspicious and locked him out. Nest's facial recognition feature confused the man, B.J. May, with the Batman T-shirt he was wearing, and apparently even Batman isn't allowed through the front door without the owner's consent.
Nest was just following orders, and May didn't hold a grudge. In a later tweet he said, "To answer some questions: Yes, the door was unlocked. My family was home, and my son was in/out the front door playing. I unlocked the door using my pin. I also could have used the phone app. It was no biggie, I just thought the face recognition fail was funny."
Image: Max Pixel/Creative Commons Zero - CC0