Memo Pad

An electronic device has a marking surface overlaid on a touch sensor. Marks made upon the marking surface create pressure that is transferred through the thickness of the marking surface to the touch sensor. Thus, the signals detected by the touch sensor correspond to the marks made on the marking surface. The marking surface may include a thin material that displays marks such as a pressure-sensitive cholesteric liquid crystal display or a conventional sheet of paper. The touch sensor may comprise a sensor capable of detecting an amount of incident force such as an interpolating force-sensitive resistance touch sensor. The electronic device may also have hardware and/or software to analyze the marks detected by the touch sensor and to communicate with other electronic devices.