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Apparel suppliers need to decide how they will assign unique serial numbers.
Jan 03, 2012—Macy's Inc. recently announced that apparel suppliers to its Macy's and Bloomingdale's stores will be required to apply passive ultrahigh-frequency RFID tags to items that account for roughly 30 percent of the company's sales. Macy's joins Walmart and other retailers that are seeking huge gains in the efficiency and accuracy of in-store inventory management through RFID technology.
Apparel suppliers that will be RFID-tagging items at the point of manufacture need to understand "serialization"—the process of assigning a unique serial number to each item. That's true whether the supplier is RFID-tagging its own goods or delegating the tagging to a contract manufacturer or labeler.
There are four ways to choose the serial number for each tag. If a product is tagged only in one place, the supplier or its designated third party can assign serial numbers one at a time. Tagging software keeps a counter with each GTIN, and advances it as each tag is programmed.
When the same product is tagged on two or more lines, or by two or more third parties, the supplier must ensure the same number isn't used more than once. One method statically assigns large ranges to a tagging station or party—for example, it might reserve serial numbers 0 through 99,999,999,999 for plant "A," and 100,000,000,000 through 199,999,999,999 for plant "B." You don't need special software to make these allocations, but you must keep detailed records of them.
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