In reference to the patent: US8386259 I would ask what is invention, as described patent is nothing more than already know Two Factor Authentication method (2FA).
If we take a look at definition of 2FA from CNET 2
"Two-factor authentication adds a second level of authentication to an account log-in. When you have to enter only your username and one password, that's considered a single-factor authentication. 2FA requires the user to have two out of three types of credentials before being able to access an account. The three types are:
Something you know, such as a personal identification number (PIN), password or a pattern Something you have, such as an ATM card, phone, or fob Something you are, such as a biometric like a fingerprint or voice print"
Any 2 combination of given 3 types can be considered as valid 2FA.
So, patent US8386259 is already known to general public and can't be considered as a patent.