It's an electric motor spinning a lopsided piece of metal. Primitive caveman "tech" that was known about before that company existed. They're a patent troll.
Immersion was founded in 1993. Haptic technology has been around since the 1960s.
Let's not conflate paying inventors with paying patent holders.
The company is buying up patents and suing people based on the most generic claims. Hardly the good guys.
I’m not so sure that feeding patent trolls is the best idea…
An idea is not a technology. Making a controller vibrate to give the player or user feedback is an idea. Filing a patent on an idea is called patent trolling and should be heavily punished.