Monitoring circuitry

A blister pack monitor comprising:

• a securing element to secure a blister pack comprising at least one storage volume and at least one monitored track which is interrupted to provide access to an interior of the storage volume;
• at least one contact pad which provides an electrical connection with a monitored track of a secured blister pack, wherein the at least one contact pad comprises a first connection element and a second connection element, wherein the first connection element and the second connection element are galvanically separated arranged to collectively form an electrical connection with a common contact pad of the monitored circuit;
• and
• electronic monitoring apparatus to determine a status of the monitored track based on a a coupling resistance between the at least one contact pad and the common contact pad, wherein the coupling resistance is based on a resistance acquired between the first connection element and the second connection element via the common connection pad of the blister pack.

A method of indicating a status of a monitored circuit comprising:

• providing a monitoring circuit comprising a first contact pad and a second contact pad;
• providing a monitored circuit having a resistance arranged between a third contact pad and a fourth contact pad, wherein the resistance of the monitored circuit is indicative of the status,
• wherein the first contact pad comprises a first connection element and a second connection element, wherein the first connection element and the second connection element are galvanically separated and arranged to collectively form an electrical connection with the third connection pad of the monitored circuit;
• wherein a coupling resistance may be determined by based on an acquired a resistance between the first connection element and the second connection element via the third contact pad,
• wherein the resistance of the monitored circuit may be determined based on the determined coupling resistance;
• and
• indicating the status of the a monitored circuit based on the determined resistance.