Hostels almost universally require a valid government-issued photo ID for check-in, and this is a non-negotiable policy for safety and regulatory reasons. In 2026, most international hostels specifically require a physical passport for foreign travelers, as they are often legally obligated to report guest information to local law enforcement or tourism boards. For domestic travelers, a driver's license or national ID card is typically sufficient. The requirement exists to ensure the security of the communal living environment; knowing exactly who is staying in a shared dorm helps deter theft and problematic behavior. Furthermore, many hostel networks, such as Hostelling International (HI), require ID to verify membership status for discounted rates. Some modern "digital-first" hostels may allow you to upload your ID via an app before arrival to speed up the process, but you will still be required to present the physical document for verification at the front desk. Attempting to check in without ID will almost always result in a denied booking, even if you have already paid in full.