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Captured January 9, 2023 5:56 pm

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Title
US9881276B2 - Ultrasonic bracelet and receiver for detecting position in 2D plane - Google Patents
Description
Ultrasonic tracking of a worker's hands may be used to monitor performance of assigned tasks. An inventory system includes inventory bins configured to store inventory items, an ultrasonic unit, ultrasonic transducers, and a management module. The ultrasonic unit is configured to be worn by a