A sensor, comprising: a first coil having a first region and a second region, the first region having a spacing between successive corresponding portions of turns of the first coil less than a first threshold distance, and the second region having a spacing between successive corresponding portions of turns of the first coil greater than the first threshold; a second coil having a third region and a fourth region, the third region having a spacing between successive corresponding portions of turns of the second coil less than a second threshold distance, and the fourth region having a spacing between successive corresponding portions of turns of the second coil greater than the second threshold; a conductive target configured to travel within a travel zone extending from a first location to a second location, wherein both the first location and the second location are adjacent to both the second region and the fourth region; and measurement circuitry configured to measure a first response of the first coil and a second response of the second coil to a position of the conductive target within the travel zone, wherein the measurement circuitry is configured to detect when a combination of the first response and the second response satisfies a third threshold, and wherein the measurement circuitry is configured to: output a first signal indicating whether the combination satisfies the third threshold; and output a second signal based on the magnitude of the combination if the combination satisfies the third threshold. a first coil having a first region and a second region, the first region having a spacing between successive corresponding portions of turns of the first coil less than a first threshold distance, and the second region having a spacing between successive corresponding portions of turns of the first coil greater than the first threshold; a second coil having a third region and a fourth region, the third region having a spacing between successive corresponding portions of turns of the second coil less than a second threshold distance, and the fourth region having a spacing between successive corresponding portions of turns of the second coil greater than the second threshold; a conductive target configured to travel within a travel zone extending from a first location to a second location, wherein both the first location and the second location are adjacent to both the second region and the fourth region; and measurement circuitry configured to measure a first response of the first coil and a second response of the second coil to a position of the conductive target within the travel zone, wherein the measurement circuitry is configured to detect when a combination of the first response and the second response satisfies a third threshold, and wherein the measurement circuitry is configured to: output a first signal indicating whether the combination satisfies the third threshold; and output a second signal based on the magnitude of the combination if the combination satisfies the third threshold. output a first signal indicating whether the combination satisfies the third threshold; and output a second signal based on the magnitude of the combination if the combination satisfies the third threshold.