Checked against the Ministry of Health, Labour and Welfare’s notice and Osaka Prefecture’s official guidance for accommodation operators on 1 October 2026. Front-desk practice can vary slightly by property, so if you’re asked for something unexpected, it’s worth asking which requirement it falls under.

Checking into a hotel in Japan with no Japanese address of your own, you’ll almost always be asked to hand over your passport at the desk — not just to glance at, but to photograph or photocopy. It can feel like an unusually thorough version of what other countries do. It is: Japan’s Hotel Business Act backs this up directly, with a specific rule for foreign guests and a paper trail that has to survive for years.

Every hotel keeps a guest register, and it has to survive three years

Under the Hotel Business Act, every lodging operator in Japan — from a budget business hotel to a capsule hotel — must keep a guest register (宿泊者名簿) recording who stayed, when, and basic identifying details. This isn’t an internal convenience; it’s a legal record the operator must retain for three years and produce if a public health office or the police ask for it.

Without a Japan address, your passport number goes in that register

The baseline information required for any guest is name, address and occupation. For a foreign guest with no address in Japan, the law adds two more fields: nationality and passport number. A 2008 notice from the Ministry of Health, Labour and Welfare spells out how hotels are supposed to get that information — by asking to see the passport itself, then keeping a photocopy filed with the register. That copy can stand in for writing out the name, nationality and passport number by hand, which is the practical reason staff reach for a photocopier or a phone camera instead of just typing details from what you tell them.

It’s not technically one of the law’s listed reasons to turn you away

Japan’s hotels do have a specific, limited list of reasons they’re allowed to refuse a booking — no vacancy, a risk of spreading a designated infectious disease, or (since a December 2023 amendment) a guest making repeated, excessive demands that amount to harassment of staff. Declining to show a passport doesn’t appear on that list in so many words. In practice, though, it rarely plays out as a standoff over legal technicalities. Guidance from Osaka Prefecture to operators lays out the actual sequence: explain that the request comes from national guidance, ask again, and if a guest still can’t or won’t produce one, treat it as a sign they may not be carrying it at all — which is itself a separate problem, since Japan’s immigration law requires every foreign visitor to carry their passport at all times — and contact the nearest police station. A hotel that skips this isn’t just risking an awkward conversation; it’s the one holding an incomplete legal record if anyone ever asks for it.

A clear photo of the photo page covers you almost as well as the original

The practical takeaway isn’t that you need to carry your actual passport to the front desk every single time — a sharp photo of the photo page on your phone satisfies most front desks, since what they need is the information and a copy to file, not the physical document in hand. What causes real delays is not having anything to show at all: no photo, no copy, no passport in the room safe you can run up and grab. If you’ve locked your passport in a hotel safe elsewhere, or left it with a tour group leader, that’s the exact situation this rule is built around — so a photo saved before you hand the original over anywhere is worth the ten seconds it takes.

How Travel AI Rescue helps

Travel AI Rescue keeps a copy of your passport details stored and readable on your device, even with no signal, so if a front desk asks and the physical document isn’t on hand, you have something to show immediately rather than explaining the situation from memory. It can also display a Japanese-language card laying out exactly what you need — a passport copy for the guest register — so there’s no confusion if English isn’t the person’s first language at the desk. It doesn’t decide what a hotel can require or override a property’s own check-in policy, since that’s set by the operator and Japanese law, not by an app. It’s different from having a staffed desk you can call, but it’s built to close the gap between a hotel asking for something and you having it ready. (What a hotel can require at check-in, and how it handles a guest who can’t produce ID, are decided under Japan’s Hotel Business Act, not by Travel AI Rescue.)

Sources

• Ministry of Health, Labour and Welfare, Notice on the Handling of Passport Copies for Foreign Guests Without a Domestic Address (健衛発第0123001号, 23 January 2008). https://www.mhlw.go.jp/web/t_doc?dataId=00tb3644&dataType=1&pageNo=1 (accessed 1 October 2026).
• Osaka Prefecture, “Thorough Recording of the Guest Register” (宿泊者名簿の記載徹底について). https://www.pref.osaka.lg.jp/o100090/kankyoeisei/guest-list/index.html (accessed 1 October 2026).