In the recent times, interacting with machines has become instinctive. Moreover, the recent improvements in NUIs are making sure that machines can understand human gestures, touch, tone of voice, and thoughts in a much better way. On the other hand, designing for Natural End user Interfaces is quite challenging as designers have to keep below parameters in mind.

SOUNDS SCI-FI ALTHOUGH 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 perfectly interact with the users without tiring them.

natural user extrémité

Image Credit rating

CAN'T AFFORD TO NEGLECT THE ACCESSIBILITY
Some actions might not be possible for users with afflictions. Therefore you can't do away with the support for assistive technology like Joysticks or electronic directed devices.