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Man-in-the-Middle PCB Unlocks HP Ink Cartridges
(hackaday.com)
This is a most excellent place for technology news and articles.
Agreed, I have a (pre-HP) Samsung laser printer and it works whenever I need it to. Sure, it only works via USB and only has one button and an on/off switch, but it works when needed.
That's ideal; the less connected it is, the less chance I'll have to shoot it