You should never share a photo of your boarding pass on social media, even if you blur out your name. In 2026, cybercriminals use sophisticated barcode and QR code scanners to extract sensitive data hidden in the matrix, including your Passenger Name Record (PNR) and frequent flyer number. With this "booking key," an attacker can log into the airline's "Manage Booking" portal to see your phone number, email, and even passport details. They could maliciously change your seat, cancel your return flight, or steal your accumulated miles. Beyond identity theft, posting a pass announces that you are away from home, which can tip off burglars to your empty residence. If you want to share your travel excitement, wait until you return, or take a photo of your passport cover and a coffee cup instead. Always shred your physical boarding pass after your flight rather than tossing it into a public trash bin.