Resistance changing sensor

A sensor configured to experience changes in an electrical characteristic in response to an external interaction, said sensor comprising:

• a first layer, a second layer and a third layer;
• said first layer being comprised of a conductive material;
• a first electrode connected to said first layer;
• said second layer being interposed between said first layer and said third layer;
• said second layer providing electrical conduction between said first layer and said third layer and being formed of a quantum tunnelling composite having an electrical characteristic sensitive to an external interaction;
• said third layer being comprised of a first set of conductive fingers interdigitated with a second set of conductive fingers;
• a second electrode attached to said first set of fingers;
• and
• a third electrode attached to said second set of fingers;
• said first electrode being electrically connected to a selected one electrode of said second electrode and said third electrode, thereby establishing a parallel electrical connection between said selected one electrode and said first electrode, while leaving a remaining non-selected one electrode of said second electrode and said third electrode;
• whereby upon application of a voltage between the parallel connection and the non-selected one electrode, a measurement dependent upon the electrical characteristic of said second layer will be made available.