Electronic identification system and method with source authenticity

System (10) electronic identification comprising: at least one encoder (14.1; 14.2; 14.3) for writing data transponder in a transponder; said transponder comprising means for providing an identification code characteristic of an entity external to the transponder; a plurality of transponders (1.1-1.n; 2.1-2.n; 3.1-3.n) each adapted to receive data from at least one encoder and to store the received data in a respective memory arrangement of the transponder; at least one verifier (16) for interrogating a selected transponder and to read data stored in the arrangement (52) memory of the selected transponder via a radio frequency link, wherein said encoder further comprises a device (42) of encryption to use a algorithm and input data characteristic encoder to generate encrypted data to form at least part of the data written to the transponder; and that the at least one verifier comprises means (56) for extracting and decrypting computer data encrypted data read from the data read by the same a comparator for comparing decrypted data with authorized data; and an indicator (18) to provide an indication of a result of the comparison.