Reading: J. Haskett, "Pass-Algorithms: A User Validation Scheme Based on Knowledge of Secret Algorithms," Communications of the CACM 27 (8) pp. 777-781 (Aug. 1984).
RFID stands for "Radio Frequency IDentification." This is a method for identifying things, animals, or people. It requires placing a chip in the object to be identified. The chip contains identification information about the object. containing the chip.