We gt those "pickers" at all our contests - even with signs that clearly say DO NOT TOUCH. Adults are worse than little kids. One guy came by when we ran a display with a 1:1 car show and just started picking up builds. We told him to stop and asked if he had a car in the show. He said yes but wouldn't tell us what car. We were going to go over to it, open the doors, sit, relax.