What is "gesture-based computing"?
a. computers that are able to make gestures on their own with joysticks
b. technology that allows users to move virtual objects with their hands
c. a special language of emoticons that is universal to all possible users
d. communicating using body language instead of digitally or online

The best and most correct answer among the choices provided by the question is the fourth choice "communicating using body language instead of digitally or online"

Gesture recognition is the mathematical interpretation of a human motion by a computing device. Gesture recognition, along with facial recognition, voice recognition, eye tracking and lip movement recognition are components of what developers refer to as a perceptual user interface (PUI).

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