Not sure if this should be in the equipment forum, I'm sure it'll get moved if so. Does anyone know more than the obvious about barcodes? I'm trying to research whether a multi-coloured barcode will work (be read properly). I know a single colour other than black can work as it's kind of read in binary â€” it's either white or not white, but I'm wondering if a machine will still be able to successfully discern a white background from different coloured bars. I'm guessing maybe not pure yellow, but what about other colours?