"IBM's Hilton codes (001368083 for International, 0901452 for US) follow the same pattern documented for IBM Marriott. FlyerTalk's definitive IBM hotel thread: "I've used IBM's corporate rate for 14 years at 80-100 nights annually and never once been asked for ID." However, "Newark Airport Marriott religiously asks for ID, requiring a letter from IBM." London Hilton properties have been systematically checking ID since 2022 per documented "London Hiltons requesting corporate ID" thread. IBM is one of the largest corporate travel account holders at Hilton globally."

"I don't know what will happen if these hotels, car rental companies, or other providers start asking for corporate identification. It seems problematic. Hopefully it will be that only a few locations, of a few brands, are demanding identification and for a specific reason."

"My point is only that this does happen and it can be problematic for those that work for a company that has great negotiated rates and the provider requires identification."