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A comment on Everything is an input device (fun with barcodes) [video]. Parent comment

Re:Everything is an input device (fun with barcodes) [video] by pr07ecH70r on Thursday September 01, 2022 @09:20AM (#32675858)
I quickly found this one... till this post, I've never thought about how bar codes work. :D

https://www.abr.com/wp-content/uploads/2014/04/barcode-basic...

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