In the recent times, interacting with machines has become instinctive. Moreover, the recent innovations in NUIs are making sure that machines can comprehend human gestures, touch, words, and thoughts in a much better way. Nevertheless, designing for Natural End user Interfaces is quite challenging as designers have to keep below parameters in mind.

SOUNDS SCI-FI NEVERTHELESS TIRING
Minority Report like office sounds really cool, but working with hands upward for a for a longer time period tire people. AJE should naturally and easily interact with the users without tiring them.

natural user cadre

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CAN'T AFFORD TO DISREGARD THE ACCESSIBILITY
Some signals might not be possible for users with problems. Therefore you can't do away with the support for assistive technology like Joysticks or electronic directing devices.