A blister pack for dispensing medication, the blister pack comprising: a substantially flat backing ; a plurality of blisters formed on the backing , wherein the blisters and the backing form cavities for containing the medication, wherein each blister is coupled with another blister to form pairs of blisters ; a plurality of breakable resistive traces , wherein one or more of the resistive traces are applied to the backing under each blister ; and a plurality of conductive traces applied to the backing , wherein for each pair of blisters , the one or more resistive traces under a first blister of the pair of blisters is connected in parallel by the conductive traces with the one or more resistive traces under a second blister of the pair of blisters ; wherein the pairs of blisters are arranged into two zones of blisters , for each pair of blisters , the one or more resistive traces under the first blister have a first total resistance and the one or more resistive traces under the second blister have a second total resistance, wherein a ratio between the second total resistance and the first total resistance is between approximately 1.55 and 1.7 to 1, and wherein the resistive traces and the conductive traces under the pairs of blisters within each of the two zones of blisters are electrically connected to each other, and in that the blister pack comprises a power source for selectively applying electrical power to the resistive traces and the conductive traces for each of the two zones of blisters ; and a controller for detecting breakage of the resistive traces under the blisters for each pair of blisters within each of the two zones of blisters by measuring the voltage across the resistive traces under each pair of blisters . a substantially flat backing ; a plurality of blisters formed on the backing , wherein the blisters and the backing form cavities for containing the medication, wherein each blister is coupled with another blister to form pairs of blisters ; a plurality of breakable resistive traces , wherein one or more of the resistive traces are applied to the backing under each blister ; and a plurality of conductive traces applied to the backing , wherein for each pair of blisters , the one or more resistive traces under a first blister of the pair of blisters is connected in parallel by the conductive traces with the one or more resistive traces under a second blister of the pair of blisters ; wherein the pairs of blisters are arranged into two zones of blisters , for each pair of blisters , the one or more resistive traces under the first blister have a first total resistance and the one or more resistive traces under the second blister have a second total resistance, wherein a ratio between the second total resistance and the first total resistance is between approximately 1.55 and 1.7 to 1, and wherein the resistive traces and the conductive traces under the pairs of blisters within each of the two zones of blisters are electrically connected to each other, and in that the blister pack comprises a power source for selectively applying electrical power to the resistive traces and the conductive traces for each of the two zones of blisters ; and a controller for detecting breakage of the resistive traces under the blisters for each pair of blisters within each of the two zones of blisters by measuring the voltage across the resistive traces under each pair of blisters . <EOS>