Recently, media outlets have reported personal security risks to airline travelers from discarded boarding passes with printed bar codes. Is it safer to stick with smart phone passes?
Hackers might be able to combine information obtained from barcode decoders with social media posts to guess passwords and eventually obtain PII, CBS reported in October 2015 here.
Yet, the practical risk for most travelers of an actual identity hack from such an event sounds remote. My own name, being somewhat unusual, makes this more difficult. You still wonder how banks and financial institutions give mortgages and car loans to people who don’t exist.