"hotelcorporatecodes.com lists Target N4083735 in the "Sometimes" verification tier. Target is one of the most-searched Hilton corporate codes online (high sharing volume), which correlates with higher hotel-side suspicion. FlyerTalk user noted: "If it is a reservation through the hotel's channels using just a typed-in code, then I'd think they would have reason to be more strict in seeking proof of affiliation" — codes widely shared publicly trigger more scrutiny than codes booked through corporate travel systems."

"Thanks for the prompt response. It's odd - the difference in the rate I booked and the next cheapest Hhonors rate was only £20! It just doesn't seem worth the effort of protecting even if I had, somehow acquired the code when I shouldn't have. Do please report back on your stay - will be interesting to note if you are also asked for some ID."

"I have used heavily discounted corporate rates for many years all over London, and have not yet been asked for ID. If I was, all I could do would be to send an email from my work account which at least is clearly from the associated company."