We get it. Holidays are exciting and we want to make the world envious with our travels.

But before you take a pic of your boarding pass and uploaded it to Facebook, think about this…

Anyone can take a screenshot of your post and upload it to a barcode decoding program.

From this they’ll be able to get personal details about you including you mobile phone number.

The someone can use this data to access your airline account where they can change your seats and even cancel your flight.

The amount of information retrieved by decoding a boarding pass barcode varies by airline.

Experts say you should shred your boarding passes after use.

You have been warned.