usps tracking scanner A USPS tracking scanner is a device used to scan tracking numbers and provide real-time updates on a package’s status as it moves through the mail system. USPS offers several ways to track packages, including through its website, mobile app, and at retail locations. The scanner captures the tracking information and updates the delivery status, which includes details like when a package was shipped, its current location, and when it’s expected to be delivered. This tool is essential for both senders and recipients to track shipments efficiently.