Students at Pennsylvania University have developed a professional tactile gaming vest which allows you to feel every shot and knife wound your characters takes. Which they recently demonstrated at the IEEE Haptics Symposium, in Waltham, Mass.
The vest is designed for military applications to allow soldiers to feel what its like to take a bullet or be stabbed. Its packed with solenoid actuators for fast responses and vibrating eccentric-mass motors.
The vibrating eccentric-mass motors are used in clustered around the vest to make you feel a slashing effect on your skin when you get stabbed in game.
Its all controlled by custom electronics and linked to the game to provide you with directional awareness of where the shot was fired from rather than just vibrating the whole vest.