Identification tag, identification tag accessory, and methods and systems for using an identification tag and identification tag accessory

An identification tag, comprising:

• an antenna comprising a common core having a coil wound around the core, the coil connected to a first antenna pad, a second antenna pad, and a third antenna pad, the first antenna pad and the second antenna pad defining a first antenna portion therebetween, the third antenna pad and one of the first antenna pad and the second antenna pad defining a second antenna portion therebetween;
• a first circuit block having a first contact pad and a second contact pad, the first antenna pad and the second antenna pad being connected to the first contact pad and the second contact pad respectively, the first circuit block having a first storage medium storing first data therein;
• and
• a second circuit block having a third contact pad and a fourth contact pad, the third antenna pad and the one of the first antenna pad and the second antenna pad connected to the third contact pad and the fourth contact pad respectively, the second circuit block having a second storage medium storing first data therein.