This process has many names, but because it was first used in the automotive sector, it's widely known as #VINLocking (#VIN stands for #VehicleIdentificationNumber, the unique number given to every car by its manufacturer). VIN-locking is used to block independent mechanics from repairing your car; even if they use the manufacturer's own parts, the parts and the engine will refuse to work together until the manufacturer's rep keys in the unlock code:

https://pluralistic.net/2023/07/24/rent-to-pwn/#kitt-is-a-demon

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Car-makers are trailblazers in imaginative rent-extraction. Take #VINLocking: this is the practice of adding cheap microchips to engine components that communicate with the car's overall network. After a new part is installed in your car, your car's computer does a complex cryptographic handshake with the part that requires an unlock code provided by an authorized technician. If the code isn't entered, the car refuses to use that part.

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This is a move that's both badly needed and long overdue. Deere abuses copyright law to force farmers to pay for official repairs - even when the farmer does the repair. That's possible thanks to a practice called #VINLocking, in which engine parts come with #DRM that prevents the tractor from recognizing them until they pay hundreds of dollars for a John Deere technician to come to their farm and type an unlock code into the tractor's console:

https://doctorow.medium.com/about-those-kill-switched-ukrainian-tractors-bc93f471b9c8

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