A Passenger Name Record (PNR) is the "digital backbone" of your travel, containing a wealth of private and logistical data. By entering a 6-character PNR on an airline's site, a user can see the full names of all passengers, the complete travel itinerary (including flight numbers, dates, and times), and the current reservation status. It also stores contact details (phone and email), ticketing information (how and when the ticket was paid for), and special service requests like meal preferences, seat assignments, or wheelchair assistance. More sensitively, a PNR can contain frequent flyer numbers and, in some systems, payment methods or credit card fragments. In 2026, security is tighter, but the PNR remains a powerful tool that travel agents and airlines use to coordinate multi-leg journeys, hotel stays, and car rentals under a single booking reference, which is why you should never share a photo of your boarding pass on social media.