So how worried should we be about Apple's Face ID?

The eyes may be the window to the soul, but your face is almost certainly the door to your wallet. Oh, and also the last vestiges of your privacy.  Apple's Sept. 12 unveiling of the iPhone X brought with it the official reveal of Face ID: face-scanning tech that will be used in lieu of Touch ID to both unlock smartphones and authenticate Apple Pay. But privacy experts, security consultants, and at least one sitting U.S. senator are concerned that the technology is ripe for abuse. So just how wo...