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Your story reminded me of a barcode debugging story from my past.

I wanted to use an image, so I ended up writing it on Twitter: https://twitter.com/benji_york/status/1566421109255315458



Good on finding that one - the rotation trick was neat.

We normally used NCR barcode scanners as they had some "3D" mirror scanning but were rather expensive and larger footprint in the frontline.




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