Toyota has recently previewed a thought controlled wheelchair that monitors brain activity 125 milliseconds which prevents any lags. Stephen Hawking would love to get his ass on one of these.
According to The Christian Science Monitor: "After training three hours a day for a week, the system is able to tailor its responses to a user’s tendencies. Imagine a hand or foot movement while wearing the cap, and the system triggers the corresponding response from the chair. Toyota claims up to 95 percent accuracy. As a failsafe, the user can puff out a cheek, triggering a sensor and stopping the chair."
The system would certainly help handicapped people and would spark innovations because of its universal applications.