Abstract: Techniques are described for tracking and recognizing gestures performed within a field-of-view of a sensor. In one or more implementations, the techniques may be implemented within an electronic device that is configured to receive a signal from a sensor in response to the sensor detecting a gesture occurring within a field of view of the sensor. A lens is positioned over the sensor to collimate light incident on the lens and to pass the collimated light to the sensor. The electronic device is configured to generate one or more light intensity ratios based upon the signal. The electronic device is then configured to determine a type of gesture performed based upon the one or more light intensity ratios.

Abstract: Techniques are described for tracking and recognizing gestures performed within a field-of-view of a sensor. In one or more implementations, the techniques may be implemented within an electronic device that is configured to receive a signal from a sensor in response to the sensor detecting a gesture occurring within a field of view of the sensor. A lens is positioned over the sensor to collimate light incident on the lens and to pass the collimated light to the sensor. The electronic device is configured to generate one or more light intensity ratios based upon the signal. The electronic device is then configured to determine a type of gesture performed based upon the one or more light intensity ratios.

Abstract: An electrically-heated spoon including a flat heating device made of a plate-like positive temperature coefficient (PTC) resistor having a periphery side wall of the spoon mounted to the periphery and a handle of the spoon extending from the side wall. A pair of conductive wires in electrical connection with the heating device are embedded in the handle and extend out of a remote end of the handle to define an external connector for connection to an external power source. The plate-like positive temperature coefficient resistor is sandwiched between two insulating plates and then encased by two opposite metal casing members with the conductive wires, which are connected to the resistor, extending through openings formed on the casing members for connection to a power source.