"Bristol-Myers Squibb's code 5298 is a four-digit numeric code, which circulates far less widely in public forums than three-letter ticker codes — numeric codes are harder to guess, share, and remember, reducing abuse volume. hotelcorporatecodes.com rates it "Sometimes." BMS is a major pharma company with significant NYC/Princeton NJ and Boston presence; properties in those markets may have greater account familiarity. The numeric format provides a slight practical risk reduction vs. a recognisable ticker code, but the company size and urban market concentration keep it at Medium."

"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."

"My last couple of corporate RFID cards had no company name on them for security purposes. My current company doesn’t do business cards. I use my Bonvoy card for corporate travel to get the points. I’d have to write them an email standing at the check in desk, I guess."