Amazon patents wristbands that track warehouse employees’ hands in real time

Amazon has been granted a pair of patents for a wristband that can pinpoint the location of warehouse employees and track their hand movements in real time. The patents, first spotted by GeekWire, describe an inventory management system comprised of trackers and receivers used to monitor workers’ performance. The original patents were both filed back in 2016 but were granted on January 30th.
The proposed system includes ultrasonic devices placed around the warehouse, the wristbands themse