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Raflatac Releases RFID Tags With Built-In EAS
Optimized for retail applications, the EPC Gen 2 tags are designed to be read equally well from all directions—even on densely stacked garments—and have an electronic article surveillance function that can be switched on and off.
Dec 17, 2007—UPM Raflatac is releasing a series of four EPC Gen 2 tags targeted to the retail market and made with the first ultrahigh-frequency (UHF) RFID chips with built-in electronic article surveillance (EAS) capabilities. The tags can be read by any EPC Gen 2 interrogator, and can have the EAS function turned on and off by the same interrogator. One of the tag models (the Web) is available now, while the other three (the Belt, the DogBone and the ShortDipole) are slated for release in January 2008.
All of the tag models are available with NXP Semiconductors' Ucode G2XL or Ucode G2XM ICs, both of which not only offer EAS capabilities but also have more memory than many other EPC Gen 2 chips (see NXP Boosts EPC Gen 2 Tag Memory, Performance), allowing retailers and manufacturers to store a greater amount of data on the tags. Both chips have 240 bits of memory available for encoding an Electronic Product Code (EPC), but the G2XM chip offers 512 bits of additional user-programmable memory.
According to Rainer Lutz, NXP Semiconductors' marketing manager, the new UPM Raflatac tags with G2XL or G2XM chips are optimized for fashion applications. "The tag antenna design is resolving two key issues of apparel applications," Lutz says. "The tags can be read equally well from all directions and also keep their performance if products are densely stacked. This is important for exact fashion inventory taking and EAS.''
The EAS functionality enables the tag to set off an alarm when read by an RFID interrogator deployed at a store's exit, thereby protecting the retailer against theft. Unlike other UHF RFID chips with EAS capabilities, however, this chip's EAS function can be turned on or off. If the EAS bit is set to "1," Lutz says, the chip will trigger an alarm at the store doors where RFID readers are installed. If it is switched to "0," the EAS function turns off.
This on-off function could be useful in cases in which a store intended to keep the RFID tag functional after purchase, but needed to disable the tag's EAS feature. For instance, the tags could remain functional to facilitate the return of purchased items for a refund or exchange. While other EPC Gen 2 tag models offering an EAS feature enable deactivation, the function can not be turned back on.
With the new Raflatac tags, the EAS capability can be switched off only with the use of a password. Without the password, a potential thief would not be able to use an RFID reader in a cell phone, for example, to disable the EAS function. At the point of sale, the POS reader can be fitted with a subscriber identity module (SIM) card that provides the password automatically as a tag is scanned, and the tag's EAS function is then switched off. The tag could also be provided without the password option, Lutz says.
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