US Patent 7623040 Smart blister pack

A blister pack having at least one security tag formed from the metal layer of the blister pack. In one embodiment, the security tag is a detached portion of the metal layer that is entrenched in a corresponding channel in the plastic layer of the blister pack and which is then completed by electrically coupling a capacitor strap or chip strap to a gapped portion of the entrenched aluminum layer. Another embodiment also forms the security tag from the metal layer but the coil or antenna of the security tag is formed as part of the process of sealing the metal layer to the plastic layer. A capacitor strap or chip strap is then electrically coupled to a gapped portion of the coil or antenna.