A lot of electrical devices today have a switch of some kind to deactivate the device after a certain period of time. Sometimes the device just gets annoyingly slow. In any case, it is implemented in software on that device. And the reason for that is Planned Obsolescence. Forcing the user to throw away this device and buy a new one.
This comment thread is for people to document various implementations of this malicious feature.
Footnote originally 讛注专转 砖讜诇讬讬诐 is an Israeli film written and directed by Joseph Cedar. The film is about a very strange dramatic bureaucratic situation, where two professors, a father and a son, are in the same field, and one of them gets a honorary award for his achievements. But the bureaucrats made a mistake and told about the award to the wrong one of them.