A small field guide for Japan
Clear, source-led help for two parts of a Japan trip that deserve a little checking: staying connected and finding a public bath that fits your needs.
Choose a guideChoose what you need
Each guide links to its sources and explains what still needs checking.
Compare Japan and South Korea options by trip length, expected data use, hotspot needs and device compatibility. Provider prices and terms can change, so check the linked product details before buying.
For travelers choosing a travel eSIM
Open the eSIM guideSearch public baths by area and the facility’s published tattoo policy. Each listing distinguishes shared-bath access, conditional access and private-bath-only options.
For visitors checking access before arrival
Open the bath finderHow we work
We organize information around real trip decisions, then point you to the organization that controls the current rule or price. A guide is a starting point, not a live availability feed.
SourcesFacility and provider links are shown alongside the relevant details.
UncertaintyIncomplete rules and changing prices are called out instead of guessed.
IndependenceJapan Info is not a carrier, bath operator or booking service.
Current status
Japan Info is applying for advertising review. No advertising code is serving ads on these guides yet. Product and booking links are ordinary links unless a page explicitly identifies a tracked partnership. We do not ask readers to click ads or links.