The RFID SKS is an independent RFID system which is designed for a simple and fast integration into existing operating environments. It does not require special connections, like e.g. USB or RS232 and the outputs can be accessed directly. The system consists of a reader, evaluation electronics, a master key (admin transponder) and the user keys (user transponder). Reader, evaluation electronics and master key are components that are assigned to each other. This means that the reader can only communicate with the appropriate evaluation electronics and that the system can only be set up with the appropriate master key. On the SKS RFID the validation of transponders is done via the reader, they have not to be programmed via an external control. If a transponder has been detected by the reader, the read UID of the transponder is validated via an internal table. If the UID is valid, the reader transmits the internal transponder number to the evaluation electronics. This information will then be processed by the RFID SKS variants SKS TRA and SKS TCA differently