US5,825,352 (Multiple Finger Contact Sensing Method for Emulating Mouse Buttons and Mouse Operations on a Touch Sensor Pad)
US7,274,353 (Capacitative Touchpad Integrated with Key and Handwriting Functions)
S7,479,949 (Touch screen device, method, and graphical user interface for determining commands by applying heuristics)
6,335,678 (Electronic device, preferably an electronic book)
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