08219822 is referenced by 3 patents and cites 130 patents.

The geographic location of a computer attempting to gain authentication to a server is obtained using the IP address of the computer, with authentication being denied if the geographic location is not approved.

Title
System and method for blocking unauthorized network log in using stolen password
Application Number
11/257421
Publication Number
8219822 (B2)
Application Date
October 24, 2005
Publication Date
July 10, 2012
Inventor
Jonas Samuelsson
La Jolla
CA, US
Allan Camaisa
Las Vegas
NV, US
Agent
Kilpatrick Townsend & Stockton
Assignee
Anakam
DE, US
IPC
H04K 1/00
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