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USPS Real Time Scanning

Mobile Delivery Device Deployment And FunctionalityMobile Delivery Devices (MDD) are new handheld scanners that allow Postal Service letter carriers to track package delivery in real-tim. MDDs replace the Intelligent Mail Device (IMD) and clamshell cell phones that letter carriers currently use to track package delivery in near real-time.

IMDs have limited capabilities and are experiencing end-of-life issues. MMDs are single devices intended to support multiple requirements —  such as Sunday delivery and dynamic routing —  report scan data faster,and support future software enhancements.

See: Mobile Delivery Device Deployment and Functionality.