Who or what is a binary bandit? Someone who steals ones or zeros from homes, in the dead of night.

Philadelphia police are “addressing” an unusual crime spree: Someone is stealing the ones and zeros from addresses mounted on people’s homes.

Station WTXF-TV in Philly says it’s happening in the city’s East Kensington section.

Meghan Haley says she noticed the zero missing from her home one Wednesday,  and saw a woman stealing it when she checked her surveillance video.

Another woman, Krista Ricca, was awakened by the sound of a power drill about 4 a.m. and saw a man stealing a number from her neighbor’s home across the street.

The news website Billy Penn first reported the thefts.

Scott Fisher also had a zero stolen. He says he doesn’t know if “someone is trying to send a message or someone just has an obsession with zeroes and ones.”

Police are silent on the theory that it is part of an elaborate game, or a prank initiation into a gang or club.