Could APPLE be interested in another Signet Patent?... Maybe so, you decide. They currently own the Touchscreen Signet Based Login. In my opinion, their Signet Patent seems archaic compared to e.Digital's microSignet patent... but you be the judge...LOL

5 Wildest Patents in Apple’s Arsenal

http://siliconangle.com/blog/2012/11/07/5-wildest-patents-in-apples-arsenal/

Touchscreen Signet Based Login

The name is a mouthful, and sounds like something from a sci-fi movie, but it’s actually pretty cool. Instead of logging in your passcode or password to access your Apple device, you’d need a special item to access it – a signet. For those who love watching medieval themed movies, you’d probably know what a signet is. A signet is a ring used to seal letters–they pour melted wax then the signet is pressed on the wax. A signet is supposed to be one of kind, but even forgers were around in the medieval days. But that’s the point of Apple’s patent: every user would have a unique signet so he can be the only one who can access his Mac or iDevice.

http://www.patentlyapple.com/patently-apple/2010/02/you-might-need-a-secret-decoder-ring-to-log-on-to-future-macs.html