An ingenious Idaho man used a homemade barcode-inscribed ring at Walmart ... Rockwell allegedly copped to pulling the hand-waving scam at Walmart on several occasions, the post read.

Download the new barcode and get to work ... and the binary for each chunk was read out by hand. He formatted the binary in order to make sure he hadn’t made errors, then used a lookup table ...

with a USB shield for the barcode scanner, and a MIDI shield on top that [James] connects to various synths in the video after the break. In between shooting barcodes, the right hand also controls ...