Company Narbis introduced a smart glasses that will not allow a person to be distracted while working or studying. Their lenses darken if the user is not concentrated.
The degree of concentration is calculated using sensors that are located on the top of the head and behind the ears. This is implemented using an algorithm from NASA.
The device is aimed more at training than regular use. The company itself recommends wearing them for up to 30 minutes 2-3 times a week.