They need to incorporate their understanding of natural human capacities such as communication, electric motor, cognitive, and perceptual skills with machine learning to make interfaces that talk with the person.

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

SOUNDS SCI-FI YET 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 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.