The system adopts the wireless signal feed back processing technology controlled by a micro processor that optimize the system performance to detect RF signals from product tags. By integrating the advanced automatic digital dynamic noise filter and a motion control noise reducer, the system can greatly reduce possible interference or false alarm. This innovative system can effectively deter shoplifting, minimize shrinkage therefore protect your profit. Our anti-shoplifting system can be customized for a variety of applications from single point-of-sale in shops to mega shopping malls or passage with security concerns.