You're at the gate. You've got yourboarding pass. You're heading somewhere exciting and you just can't wait untilyou get there to share the news with your friends on social media. So you snapa picture of your boarding pass and post it to Facebook. Harmless, right?

Maybe not.

Because theinformation printed on your boarding pass actually reveals a lot more than you think.

As explained via a recent blog post by KrebsonSecurity,there are websites that can read the barcodes on your boarding pass and providesomeone else access to your travel information-your phone number, frequent flyernumber, and information not only about the flight in question but also allfuture flights booked through the same number. With access to your boardingpass, someone could even change your on the plane, cancel any future flights,and reset your account PIN number.

You may loveyour friends, but would you trust everyone you know on Facebook or Twitter withyour private travel information? Didn't think so.

The takeawayhere: Don't post pictures of your boarding pass on social media.

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Read the original story: TheOne Thing You Should Never Do With Your Boarding Pass by JamieDitaranto, who is a contributor to SmarterTravel.