In 2026, it is a standard and often legal requirement to present your passport to hotels in Europe upon check-in. Many European nations (such as Italy, Spain, and Greece) have laws requiring hospitality providers to register all international guests with the local police or government authorities for security and taxation purposes. While the hotel staff will likely take a photocopy or scan of your passport's information page, they are not legally allowed to keep your physical passport once the registration is complete. You should always ask for your passport back immediately after they have recorded the necessary details. With the full implementation of the EU Entry/Exit System (EES) in 2026, much of this data is becoming digitized, but physical passport verification remains the primary way for hotels to confirm your identity and legal entry status. If a hotel insists on holding your passport as "collateral" for the room bill, you should politely refuse and offer a credit card deposit instead.