Development of KPHOB has been a long journey. It started with simple idea of using a proximity sensor on the key and the door to detect and register the times when we have used the key. The next step was adding the means to measure the revolution of the keys so the user makes sure they locked the door properly. At the moment we are one step away from completion of the final hardware and we need to perfect our firmware for a better user interaction. we are at preliminary stage with recognition algorithm and we are seeking some funds to take this step faster. It is also necessary to make injection molding tools after we finalize every hardware detail. That requires some initial funds to get it done.