don't like the price? change the barcode!

Perry E. Metzger perry at
Fri Apr 11 12:57:11 EDT 2003

A trivial way to attack automated bar code scanners: change the
barcodes on products you are buying. I think actually doing it is
reprehensible, but on the other hand it does show what happens when
people start applying lessons from computer security to the real world:

A Salon article on the same topic:

Perry E. Metzger		perry at

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