Tactful Calling : Urgency-Augmented Phone Calls through High-Resolution Pressure Input on Mobile Phones

Inexpensive Multi-Touch Pressure Acquisition Devices (IMPAD) are flexible, paperthin sensing surfaces that can scale from portable devices to large tables. These devices can sense varying levels of pressure at a resolution high enough to sense and distinguish multiple fingertips, the tip of a pen or pencil and other objects. Other potential applications include writing pads, floor mats and entry indicators, biopressure sensors, musical instruments, baby monitoring, drafting tables, reconfigurable control panels, inventory tracking, portable electronic devices, hospital beds, construction materials, wheelchairs, sports equipment, sports clothing and tire pressure sensing.