"Toshiba's Marriott code TOS is for the Japanese electronics and infrastructure company. Toshiba has significant US operations in multiple sectors (memory, power systems, elevators). hotelcorporatecodes.com lists TOS in the 'Sometimes' verification tier. Japanese company codes at US Marriott properties carry standard tech-sector Medium risk; in Japan and Asia, Marriott properties are more verification-active. No specific TOS denial documented in public forums. Standard Medium calibration applies."

"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 “."

"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."