Current touchscreens don't offer much in the way of tactile feedback, but that could change thanks to E-Sense technology developed by Senseg and Toshiba. E-Sense runs current through surface-mounted electrodes to simulate texture, pressure, and pin pricks. This "electrotactile" array can be embedded in LCD screens, touchpads, and even curved surfaces, according to robotics news portal Hizook.
Source: The Tech Report