An anonymous reader writes "IEEE Spectrum reports that University of Pennsylvania researchers have developed a Tactile Gaming Vest that smacks and vibrates as players get shot in a game based on Half-Life 2. Four solenoid actuators in the chest and shoulders in front and two solenoids in the back give you the feeling of a simulated gunshot. In addition, vibrating eccentric-mass motors clustered against the shoulder blades make you feel a slashing effect as you get stabbed from behind. If this kind of vest could be linked to a movie while you watch it, the experience would be that much more exciting. Or as one of the creators put it, 'every time Bruce Willis gets shot, you feel it.'"