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Electronic Pointing Devices
Definition:

Electronic pointing devices allow the user to control the cursor on the screen using ultrasound, an infrared beam, eye movements, nerve signals, or brain waves. When used with an on-screen keyboard, electronic pointing devices also allow the user to enter text and data. Example: Electronic pointing devices might look a bit like something from the space age, but the technology is life-changing for people with little or no mobility. Take the case of Vanya, a teenager with a traumatic brain injury. Vanya’s ocular movement was tracked and registered. She is now able to use a device that lets her interact with her computer, and thereby control her environment, solely with eye movement.