"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 now always make it a matter of course to carry documents (business cards of my contacts, e-mails requesting my visit etc.) from my host company when I travel. This has always proven sufficient for the few times I've been challenged by the front desk clerk."

"I have stayed 100s of times with various corporate rates (including Japan) and the only hotel that has asked is W hotels. Even then they didn’t push much. I have been a consultant for 20 years and many clients require you to use their rates when they are paying the bill. The hotel doesn’t have an up to date list of every employee that works for a company globally. The woman at the W said “I don’t really care, just show me anything on your phone that says your name and that company. You can type an email now “."