Airline boarding passes contain personal information that could lead to identity fraud security experts advise.
Krebs on Security reported August 17, 2017 that the bar-code printed on a boarding pass can be used in combination with the airline’s website to obtain such information as future travel plans (including the ability to change or cancel upcoming flights) and data that can be used to access travellers’ frequent-flyer information.
Commonly available bar-code and QR code readers can be used to scan information stored on boarding passes. Hackers also can use data from the boarding pass to get the traveller’s passport information and change passwords for online accounts.
A keyword search of Instagram found at least 91,000 images of boarding passes posted online. A similar search revealed more than 42,000 images of concert tickets — another document printed with bar codes that can be easily hacked.
So our advice in short, destroy your boarding passes once you have used them…. ideally with a shredder.