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

In the recent times, interacting with machines has become instinctive. Moreover, the recent improvements in NUIs are making sure that machines can comprehend human gestures, touch, tone of voice, and thoughts in a much better way. On the other hand, designing for Natural Consumer 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. USER INTERFACE should naturally and easily interact with the users without tiring them.

natural user cadre

Image Credit rating

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