A soft label with circuits in double sides whose base (2) consists of an insulation film (21) and conducting layers (22, 23). The conducting layers are formed on the first face and the second face of the insulation film (21), respectively. The said conducting layers (22, 23) have decoding circuit formed of capacitor (221), conducting wire (222) and decoding point (223). Both the conducting layers (22,23) have loop coiled with conducting wire (222).
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