The first active transponders were used towards the end of WW2. They served there the identification friend or foe. The first passive, commercial RFID systems were introduced in the 70s in the area of anti-theft security and access control systems.
Gladly active transponders in existing machinery, equipment, control systems and vehicles are integrated, since particularly good integration conditions per se are present (common supply, interfaces, antennas, housing u.v.a.m.).
Active tags have over passive transponders have their own power supply (battery, battery or external power or on-board network), as well as intelligent processor and memory chips. They therefore offer the following advantages: