A system according to claim 8, including means for ejecting the card or badge after reading comprising a NAND gate (P21) with two inputs respectively controlled by output (D4) of column indicator (IC) triggered at transmission end and by output (D7) of register indicator (IR) triggered at receipt end, said gate energizing an ejection reel (BE) through an OR gate (P22), a bistable flip-flop (BB4) a