Kevin is a very resourceful 15-year young boy from Sierra Leone, who make electronic devices by himself using spare parts from trash. His skills were also noticed by the famous MIT, watch his inspiring story.
The new Apple iPhone 5S comes with a touch sensitive finger print reading home button that enables you to unlock your phone or authorize buying apps by simply putting your finger on it.
Apparently Google Glass lets you take pictures by only a wink gesture. It has a second little cam/sensor facing the person wearing it which is suppose to detect eye movement and blinking gestures.