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1. A media handler for detecting counterfeit media, the media handler comprising:
a removable media cassette; a pick unit that picks individual media items from the removable media cassette; a diverter; a plurality of discrete sensors distributed along a transport path operable to transport a media item from the pick unit to the diverter, wherein each of the discrete sensors is mounted on a corresponding circuit board separate from circuit boards of other discrete sensors, wherein each of the discrete sensors is laterally offset relative to at least one other discrete sensor, wherein a first of the plurality of discrete sensors comprises an ultrasonic sensor to detect when the pick unit picks multiple media items, to detect a fraudulent composite banknote, and to provide media item detection even where the media item includes a transparent window; a plurality of position sensors mounted on a plurality of the circuit boards with the discrete sensors to detect positions of the media items along the transport path; and a controller operable to receive signals from the plurality of discrete sensors and to make a decision on validity of the transported media item based on the received signals.
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