The guys at Best Buy always have to check your receipt on the way out. This I understand, but the guy at the door also does a little squiggle mark with his pen once they’ve checked it. I’m convinced this is just superfluous pen signage that is only there because it makes it feel more “official” that he checked it, whereas if he just looked at it and let you go then it could look like he’s not actually checking it. Maybe someone who works at Best Buy can explain this? Actually that reminds me that I actually do have a friend who used to work at Best Buy. Time to send him an email.