Methods to Recognize Special Tags in UHF RFID System

With the emerging of UHF RFID, people pay more and more attention to the recognition and selection of multi-tags. As for the recognition problem, it has already been relatively perfectly solved by anti-collision method. But we still lack mature methods to recognize special tags. This article summarizes and discusses two available solutions: one is to adopt accumulative total count distinguish method; the other is to make use of Low-frequency sensei technology.