I am an electronic and comm. engineering student, I have trouble in choosing my final year project topic. At first, I decided to build an passward/face recognition based Android app for wireless door lock/unlock system. However, this idea was banned by my supervisor because of lack of contribution and innovation, since there are already many face-recognition based door lock in the market. My interest is to use an app as a remote control to drive some hardware, and I am stuck at choosing a suitable topic according to my interest. Can you provide some ideas to me please?