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How USPS tray label barcodes are different from the other barcode types? USPS tray label barcodes are unique by their such functionalities: *Different structure: USPS tray label barcode is a unique structure that provides specific information about contents of mail tray, including Mailer ID, Service Type ID, Mail Processing Category, and Destination ZIP Code, arranged in a unique format. *Larger size: This tray label barcode is a larger barcode than other types, designed to be easily scanned by barcode readers. It is printed on a label affixed to mail tray and is typically larger than other barcodes used in retail, manufacturing, or healthcare industries. *Advanced encoding: It employs advanced encoding techniques to ensure accurate and efficient reading by barcode scanners. It combines variable-width bars and spaces with special encoding techniques like start and stops characters and check digits for reliable reading. *Unique identification: USPS tray label barcode is a unique identification for each mail tray, providing information about its contents, routing, and sorting. This enables the USPS to efficiently sort and deliver mail, while also allowing customers to track their mail in real-time, enhancing visibility and transparency. Which characters can be encoded in USPS tray label barcoding? This barcode uses Code 128 symbology, which encodes various characters such as uppercase and lowercase letters, numbers, and symbols, and includes special characters for structure and formatting.The specific characters for encoding in USPS tray label barcode depend on data element being encoded, such as Mailer ID data element, which is a unique six-digit number.The start and stop characters and indicate the barcode's start and end, while FNC1 character signifies presence of an Application Identifier (AI), a code used to identify specific data elements within barcode.