User Identification Based on Force-Sensing Keypad by Force-Space-Time Method
In this research, a force-sensing keypad was constructed by adding the pressure sensors with the individual keys on the standard keypad. The sensors permit the dynamic measurement of applied force and key-press timings. It can provide an advantage of more detailed information about key-press force. Details of the experimental setup used are given, and the results from initial tests are reported. The results shows the force-space-time method for user identification based on force-sensing keypad is valid.
L. Tang et al., "User Identification Based on Force-Sensing Keypad by Force-Space-Time Method", Advanced Materials Research, Vols. 255-260, pp. 2023-2027, 2011