At my Hub anything goes. You just need a property pass; that system is pretty flawed though. It's just a pain in the rear when you have all these kids trying to go through the medal detector at the end of the shift. They have their phones, ear buds, iPods, laptops, constantly getting called back through because they didn't take a phone out their pockets... And you're standing outside in a line at -30 below zero.. waiting for your chance to leave the property. But it's not a problem, a lot if the older folks complain though....