Abstract: A system automatically verifies the authenticity of a manually handwritten symbol entered into a computer or other electronic device by a user writing on an electronic tablet or pad. After a symbol is entered, a logic device determines whether the sensing locations and points in time associated with sensing the imprint of this symbol on the tablet substantially match respective sensing locations and points in time associated with the imprint of one of the previously stored original handwritten symbols. Preferably, the sensors are arranged in a prescribed line pattern, for example that of a square, immediately beneath the writing surface of the tablet, and sense the intersections of the imprint with the line pattern.

Abstract: A portable desk with a generator for providing electrical power to a computer or other electrical device that is collapsibly foldable to a compact form wherein successive sections comprise a back panel, a desk top panel hinged from the top edge of the back panel, two side panels hinged from the side edges of the back panel, two bottom panels hinged from the bottom edges of the side panels and two movable foot treadle panels hinged to the bottom edge of the back panel. The generator is removably attached to the top panel and is connected to the foot treadles so the generator is operated by actuating the foot treadles. The power generator comprises an electrical connection, such as a USB connector, for a computer or other electrical device.

Abstract: A portable desk with a generator for providing electrical power to a computer or other electrical device that is collapsibly foldable to a compact form wherein successive sections comprise a back panel, a desk top panel hinged from the top edge of the back panel, two side panels hinged from the side edges of the back panel, two bottom panels hinged from the bottom edges of the side panels and two movable foot treadle panels hinged to the bottom edge of the back panel. The generator is removably attached to the top panel and is connected to the foot treadles so the generator is operated by actuating the foot treadles. The power generator comprises an electrical connection, such as a USB connector, for a computer or other electrical device.