Say goodbye to "slide to unlock." At today's press conference, Apple introduced the new iPhone 5S with a biometric lock it claims will revolutionize mobile security. Here's how it works, and what it means for you.
Tricks of the Trade
There are two major technological schools when it comes to fingerprint authentication—electro-optical and capacitance. EO scanners work a lot like a traditional scanner does: they use bright lights to illuminate the peaks and valleys of the print and a CCD device to capture a black and white image—white areas are peaks, dark areas are valleys. A computer algorithm then compares the pattern of light-dark intersections, known as minutiae (ie where two ridges meet or a ridge splits), in this image to one already on file for the individual. If enough intersections match, the identity is considered verified and access is granted. The Victorinox Presentation Master we reviewed a few years back used this system, however it is not the one used by Apple.