Interference protection

The invention relates to a tightening the so-called RFID system interference protecting method, the so-called identification information of the identification device for is longer than the micro variation duration of anticipated interference data, for example the information comprises a checking and form redundancy blade. The identification device for repeatedly the information, and method for redundancy detection. And the redundancy hook with the deviation, wherein for example to the data content of checks information and checking and is discovering for exists in consistently, wherein the treatment process, and a to the tracking communication of the blade hook, setting apparatus ejector is between the information the deviation of each external gas generating and for checking and verification through the substrate so-called CRC method, and an alternative to switch is a until the redundancy hook is connected to the receiving result.