Hotels verify identity through a process called Guest Identification (IDV), which typically requires a government-issued photo ID like a passport or driver's license at check-in. In 2026, many hotels have modernized this using biometric and digital verification technologies. Upon arrival, the receptionist uses a scanner to read the ID's "Machine Readable Zone" (MRZ) or an NFC chip to confirm the document's authenticity and check for tampering. This information is then matched against the name on the reservation and the credit card provided for incidentals. For "contactless" check-in, guests use the hotel's app to upload a photo of their ID and a "live selfie," which an AI system compares to ensure a match. This process is not just for security; it is a legal requirement in many jurisdictions where hotels must report guest registries to local authorities. These automated systems also help prevent identity theft and "friendly fraud," ensuring that the person checking in is indeed the person who made and paid for the booking.