Man sneaks on board a plane by taking photos of other passengers' boarding passes. Without a personalized ticket there is actually no access to a plane.
A Texas man managed to board a Delta Air Lines flight without his own ticket. The 26-year-old could face a fine or a prison sentence of up to five years. In general, it is advisable to take good care of your ticket when traveling. As it can't be photographed - the barcode contains personal data that can be decrypted.