Over the last two years multiple web sites and news agencies published warnings about how dangerous it was to discard boarding passes. Dangerous may be a little overdramatic, but some precaution is warranted. There is a lot of personal information in that little box that’s scanned by the gate agent. You full name, frequent flyer number and other personal information are some of the details stored there. You can even scan it yourself with a free smartphone app! Privacy continues to be under attack from multiple angles, so it’s just good sense to shred your boarding passes after use.