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What Type and Frequency of RFID Tags Are Used in Retail?
Also, are there different ways to write to or deactivate a tag?
Retailers typically employ passive UHF RFID tags operating at 860 to 960 MHZ, depending on their region. The range for writing to or deactivating a tag is shorter than the read range, but it depends on a variety of factors, including the size of the tag used, the reader antenna used and so on. I would estimate about 10 feet as a rough range to write to or deactivate a tag. To kill a tag, you must send a password and then a kill command. This is the way in which all passive UHF RFID tags are set up. Killing a tag means it can never be read again.
—Mark Roberti, Founder and Editor, RFID Journal
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