Why would someone buy this product? I'm not trying to be confrontational: What would make a consumer choose this lock over one opened using a traditional key? Is it simply that a key-lock can more easily be picked? Most locks are defeated by being broken, not picked. A fingerprint-reading mechanism would require a power-source (a downside), and it would cost more to implement (I believe) than a cylinder. So, what reasonable advantage over the current standard does this product offer?