In the recent times, interacting with machines has become instinctive. Moreover, the recent improvements in NUIs are guaranteeing that machines can understand human gestures, touch, words, and thoughts in a much better way. Nevertheless, designing for Natural Customer 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 much longer 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 ailments. Therefore you can't do away with the support for assistive technology like Joysticks or electronic directing devices.