Literally nothing, it's all 100% security theater for anyone thats takes a minute to think through attack vectors. The only technology they make you declare wh

Literally nothing, it's all 100% security theater for anyone thats takes a minute to think through attack vectors. The only technology they make you declare while entering into the building/campus is the technology you want to take out. So to exfiltrate data all you'd need to do is buy a burner phone, not declare it when entering, acquire whatever data you're stealing, use the burner to email it to to yourself or w/e, then just ditch the phone before you go back out through security. There are body scanners and x-ray machines checking people, but only going out, not in.