Secure radio-frequency identification system

A computer program product comprising a computer-readable storage medium having a set of instructions stored therein which, when executed by a processor, causes the processor to perform a method including:

• identifying a first transmission mode based on a combination of interrogation signals received from an RFID reader, the combination including at least two radio frequency signals, a first signal and a second signal;
• determining a responsive transmission based on which pre-defined attributes are represented by the combination of interrogation signals;
• and
• returning the responsive transmission to the RFID reader.

A computer system for radio frequency identification (RFID) security, the computer system comprising:

• a processor set;
• and
• a computer readable storage medium;
• wherein:
• the processor set is structured, located, connected, and/or programmed to run program instructions stored on the computer readable storage medium;
• and
• the program instructions which, when executed by the processor set, cause the processor set to perform a method including:
• identifying a first transmission mode based on a combination of interrogation signals received from an RFID reader, the combination including at least two radio frequency signals, a first signal and a second signal;
• determining a responsive transmission based on which pre-defined attributes are represented by the combination of interrogation signals;
• and
• returning the responsive transmission to the RFID reader.