Perception-Based Tactile Soft Keyboard for the Touchscreen of Tablets

<div>A commercial touchscreen with an attached piezoelectric actuator: tactile feedback calibration on touchscreen with an accelerometer (a) and the measured acceleration values for increasing input voltage on the actuator (b).</div>

Mobile Information Systems

fig7

Figure 7

Figure 7: Perception-Based Tactile Soft Keyboard for the Touchscreen of Tablets 