Abstract: An information processing system includes an identification unit configured to identify unique information on shoes using at least part of a captured image of the shoes, and a setting unit configured to set an association between an acquisition device configured to acquire the unique information and a module device attached to the shoes based on the unique information.

Abstract: A magnetic recording/playback device in which a tape mounting device for mounting a magnetic tape in a cassette on a magnetic head drum or demounting the tape from the magnetic head drum into the cassette and a mode switching driving device adapted for effecting a switching of operation mode such as recording, playback, rewinding and forwarding are driven by a single driving power source, in good sequence through a change of the load imposed by the tape mounting device and the mode switching driving device, to permit a reduction in size and weight of the recording/playback device.

Abstract: Two auxiliary heads are provided in addition to the two main heads for a helical scan video signal tape recorder. The vertical and horizontal positions of the auxiliary heads are determined so as to effectively reproduce a slow-motion picture from a magnetic tape on which the signals are recorded using the so called "azimuth" recording method. The output of each head is selectively supplied to a video signal demodulating circuit via a switching circuit.