A police officer went undercover as a homeless man to catch distracted drivers. The vast majority of violations issued were to people using their phone while driving.

Cpl. Patrick Robinson went undercover equipped with a police radio and a body camera. He held a sign that read, “I am not homeless. I am a Montgomery County police officer looking for cell phone texting violations.”

The drivers were paying so little attention, they didn’t even notice what the sign said.

Check out the video!