A method and apparatus for erasing previously entered data shown at an area on an input device are disclosed. A pen-erase action generates a pressure on the input device and in consequence an electric contact between resistive layers of the input device. By comparing a series resistance including the...http://www.google.com.au/patents/US20010033274?utm_source=gb-gplus-sharePatent US20010033274 - Method and apparatus for erasing previously entered data
