Would you let your home insurance company monitor your house? In October, United Services Automobile Association (USAA), the country's leading auto, home and life insurer for military personnel, received a patent for a data recorder that can be installed in a home for observation. USAA's device will record conditions that "have led to damage or destruction of the building" or to "forecast the possibility of future damage or destruction." The device can track the temperature, wind speed and mechanical vibrations as they affect the house, as well as humidity, which could cause mold in the walls. Sounds like a good idea? Yes, for the insurance company, but not necessarily for the homeowner.