"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."

"We know what the various Deloitte, EY, PwC, Google, Meta, etc badges look like. If you work for the company, it’s not a problem to verify that you work there. We do this for the random people that say they work for Deloitte, when in reality, they just refill the vending machine at a Deloitte office."