HP 'timebomb' prevents inkjet printers using unofficial cartridges (theguardian.com)

How many other brands of printers do this as well? This seems like something that would be too significant an advantage to have one company doing it and not others.

Surely HP are opening themselves up to a lawsuit (or DoJ/EU investigations) here?

Previous thread: https://news.ycombinator.com/item?id=12524031