Behind much of the technology is San Jose-based NeuroSky Inc., which first made a splash in 2009 when toy maker Uncle Milton Inc. used its headset for the Star Wars Force Trainer toy that let youngsters suspend a ball inside a tube. As the child concentrated, a fan would spin and blow the ping-pong ball upward. Now, about 1,700 software developers are working with NeuroSky's technology, the majority of them making mind-controlled computer games for the company's $129 MindWave Mobile headset... NeuroSky faces competition from San Francisco-based start-up Emotiv Systems Inc., which offers a $300 multi-sensor headset. Emotiv sells a variety of software including a package of popular games like 'Call of Duty' and 'World of Warcraft' that are optimized for the company's headset, as well as a program designed to let users control a computer with thoughts instead of a mouse or keyboard.
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