One of the biggest features of the iPhone 5s announced yesterday is the Touch ID fingerprint sensor that is used for user authentication. Rich Mogull at TechHive has written the definitive Q&A about the sensor built into the iPhone 5s, and there are some fascinating things to know about the future of mobile security.
The first thing Mogull points out is that the Touch ID sensor is based on a capacitance reader, which makes use of the fact that the outer layer of your skin is non-conductive while the subdermal layer is con
