Designer Chen And FEI (Yi-Fei Chen) presented an unusual project as a graduate thesis at the design Academy in Eindhoven (the Netherlands). She took the gun that runs on tears. Video device published on YouTube.
On the face of the person is secured by a special mask, the wires pass through the nose and ear. Tears fell on the cheek, and flow into a funnel made of silicon, inside they freeze and turn into ice bullets.