In my friend of friend's neighborhood, thieves used hardhat/hi-vis vest to commit thefts.

Basically, a man with a hard hat, hi-vis vest, and a clipboard knocked on the door of a house. He claimed he needed to check some gas line in the back yard. While the resident was in back yard distracted by him, another person snuck in and stole jewelry. They hit few houses but were eventually caught by local police.