Articles by John D. Platt
John D. Platt is an industrial engineering undergraduate student of Ingram School of Engineering at Texas State University-San Marcos.
Usability Evaluation of Randomized Keypad
Abstract In this work, the usability of a randomized numeric keypad was examined and compared to the usability of a conventional numeric keypad. The comparison used completion time measurements and the error rate of short (4 digit) and long (8-digit) PINs to contrast efficiency and accuracy of the keypads. The results showed that the average […] [Read More]