About an hour later, two men in white Tyvek coveralls showed up in an unmarked, surgically clean white van and went to work. Rydell would've liked to watch them get the smart tag off, but there was a run of shoplifters that night and he didn't get to see what they did to it. They didn't use scrapers or solvents, he knew that. They used a notebook and a couple of adhesive probes. Basically, he guessed, they reprogrammed it, messed with its code, and after they left, the graffiti-eaters were back out there, slurping down the latest Chupacabra iconography.