Well the idea for the shoe to recharge itself by using the energy gained by walking is an excellent idea. The whole thing with it being conected via bluetoth and vibrating, yada, yada, nice try but to complicated for something as simple as a ringer. I would never wear something like that. I always keep my phone on vibrate when it is on me. If I set it down somewhere I turn the ringer on, but the only time I leave my phone unattended is while at home. If ringers were considdered rude then everyone would practice the same general idea of just keeping the ringer off with the vibrate on. Simple.