bar code games

this bar code generator is popping up all over the weblog world at the moment and has reminded me to look out an explanation of how bar codes work. i started in on a long explanation of fun games to play with decoding grocery barcodes here but then decided that this was probably only defined as “fun” in kirstyworld and even then only in the depths of the war against boredom. you’ll never know. it’s probably for the best.