Transponding tag and method

A method of responding to an interrogation signal, said method comprising steps of:

• receiving said interrogation signal at a transponding tag which includes an antenna having first and second spaced apart conductive layers with at least one slot therein and having an electrical circuit coupled to said antenna, said first and second conductive layers being electrically isolated from each other, wherein said electrical circuit is shielded from said interrogation signal by said first and second layers;
• energizing said electrical circuit in response to said receiving step;
• and
• responding with a response code from said antenna in response to said energizing step.

A tag, said tag being a transponding tag for responding to an interrogation signal, said tag comprising:

• a substantially planar dielectric member having first and second substantially opposing sides;
• a first conductive layer disposed on said first side of said dielectric member, said first conductive layer having a slot across which said interrogation signal develops a first electrical field;
• a second conductive layer disposed on said second side of said dielectric member, said second conductive layer having a slot across which said interrogation signal develops a second electrical field, said first and second conductive layers being insulated from each other;
• and
• an integrated circuit semiconductor chip residing within said dielectric member, said integrated circuit semiconductor chip being electrically coupled to said first and second conductive layers.