"Northrop Grumman's Marriott code NOR is a major defense contractor code. Defense contractor employee IDs are classified security badges that staff recognize. Properties near Northrop Grumman facilities (Los Angeles, Falls Church VA, Melbourne FL, Huntsville AL) are most likely to encounter genuine Northrop employees. FlyerTalk's defense code thread: "Security badges from defense firms are hard to fake and staff know the look." US full-service properties near defense installations: 15-25% verification rate. Select-service: minimal."

"My employer does not have a corporate rate but when I'm consulting for a company that does, I use theirs. I've only been challenged for identification once. In that one situation I explained the consulting arrangement, and the desk clerk accepted it without a badge or business card (neither of which I had anyway)."

"I think the generic 'show corp id' designation means show the company business card. I think a lot of us don't have them or, if we do & we're not going to an office that we'd need to show them, leave them at home. I worked for some F500s that didn't require corp ids with shiny smiling faces on them & others that did; same with company credit cards. All, however, provided biz cards when working for them."