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Trained repair professionals at hospitals are regularly unable to fix medical devices because of manufacturer lockout codes or the inability to obtain repair parts. During the early days of the COVID-19 pandemic, broken ventilators sat unrepaired for weeks or months as manufacturers were overwhelmed with repair requests and independent repair professionals were locked out of them. At the time, I reported that independent repair techs had resorted to creating DIY dongles loaded with jailbroken Ukrainian firmware to fix ventilators without manufacturer permission. Medical device manufacturers also threatened iFixit because it posted ventilator repair manuals on its website. I have also written about people with sleep apnea who have hacked their CPAP machines to improve their basic functionality and to repair them.
PS: he got it repaired.
Thanks for the history and technical explanation. I didn’t mean to imply that was the origin (for computing) and was only talking about a specific usage of the word.
I think most people say it to refer to manufacture imposed limits but I wanted to promote a broader usage. That using proprietary software is like being in a jail because your software freedoms are denied.