Sweep detectors, systems, and methods for securing items of merchandise from theft and are provided. In one example, a sweep detector system includes a sound generator configured to be coupled to the pusher device. The sound generator is configured to generate a sound in response to removal of an item of merchandise from the pusher device. The sweep detector system also includes a monitoring device configured to detect the sound and to determine if a predetermined number of items of merchandise have been removed from the pusher device.
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InVue Security Products Inc., "SHELF SWEEP DETECTOR", Technical Disclosure Commons, (October 12, 2017)