Anti-theft system installed in the configuration of mono (one antenna for two-pass) protection on each side about 80-100cm, ie total of up to 2 meters. Each antenna RFID system can read information from a stable sensor only at a distance of 50 cm in each direction. Ie to finalize the anti-theft system "third generation" to RFID 13,56 MHz version mounted in mono (even if imagine that this is possible), will need to install another 2 RFID 13,56 MHz antenna at a cost several times greater than the cost of the antenna of the "third generation". – EAS systems "third generation", theoretically, in the case of successful and very expensive to retrofit RFID systems can only work on a standard 13.56 MHz, which is now replaced by UHF RFID systems have become since 2005 the global standard for retail. Global standard for UHF RFID technology in RETAIL RFID systems have begun to actively develop 10 years ago, and systems operating at 13.56 MHz were the first ones to have been used in retail and in warehouses. First, these systems have some bottlenecks, in particular, RFID Gate 13,56 MHz distinguished by the fact that the sensors are not very well read in all projections, and in the passage formed a lot of "holes" through which it was possible to carry goods. Around 2004 began to actively develop RFID technology in frequencies UHF (865-890 MHz European band).
The need to develop this frequency range was very large, especially for retail and logistics – UHF band is able to provide long range (up to 6m) and significantly more lower price than the system at 13.56 MHz. In addition, UHF tags can be significantly smaller than the 13.56 MHz tags, and still maintain a large reading range. Even more important is the fact that UHF systems are much less sensitive to the orientation of the label in relation to the reader, ie can be read in any projection without loss of range and does not require more power.