US Patent 7092943 Location based data

Data is provided with location-based access control information. Access to the data at a physical location is then limited according to the location-based access control information. A physical location of a device accessing the data can be determined, and the limiting of the access is then according to the determined physical location. The data can be provided in encrypted form, and limiting access to the data includes enabling decryption of the data according to the physical location.