A research group at Keio University, led by Associate Professor Yasue Mitsukura, has developed a simple brain-wave meter. This can identify, in real time, whether a person is showing interest, concentration, desire, stress, or sleepiness.
What it basically does is measures the brain waves real-time and thus can determine whether you are sleepy or how much you are concentrating. I am happy this didn’t come when I was in college!
Check out the video below and leave your comments. And be careful, you need to get your minds out of the gutter now.