OverTheGeicoE writes "TSA has had a preferred traveler program, PreCheck, for a while now. Frequent fliers and other individuals with prior approval from DHS can avoid some minor annoyances of airport security, like removing shoes and light jackets, but not all of the time. TSA likes to be random and unpredictable, so PreCheck participants don't always get the full benefits of PreCheck. Apparently the decision about PreCheck is made when the boarding pass is printed, and a traveler's PreCheck authorization is encoded, unencrypted, on the boarding pass barcode. In theory, one could use a barcode-reading Web site (like this one, perhaps) to translate a barcode into text to determine your screening level before a flight. One might even be able to modify the boarding pass using PhotoShop or the GIMP to, for example, get the screening level of your choice. I haven't been able to verify this information, but I bet Slashdot can. Is TSA's PreCheck system really that easy to game? If you have an old boarding pass lying around, can you read the barcode and verify that the information in TFA is correct?"
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