Grocery store run tonight, this was marked on the floor next to the checkout as they renovate the place. It’s right behind the automated checkout “I am not a shoplifter” station:

There it is, all clear. Having been a radiation worker myself, I have a good idea of the actual safety and regulatory requirements for an actual x-ray generator, so I have to guess this is an error, but the mind boggles. Terahertz-based package scanners? RFID anti-shoplifting? The mind boggles. Hit the comments and post your idea. Bonus points for aliens, mind control and the Trilaterals.