Really, really want to keep track of your stuff? Or prevent your friends from "borrowing" you spanking new GPS without asking? British-based company Covert Asset Tracking Systems (CATSeye) believes it may have the answer. The company manufacturers matchbook sized transmitters that can be tracked via GPS, GSM, or radio frequency.

The company demonstrated the technology at CTIA last week in Los Angeles, and claimed to be able to track items down to 1-inch accuracy (hmmm...sounds suspect to me). The company says the devices will likely be used in electronics that are common targets for thieves, such as laptops, GPS units, and desktop computers. The transmitters are mainly tracked via GPS, but can fail over to GSM cellular service or radio if no GPS signal is available. Looks like you need to connect the device to a power source, so this may not be the product for those of you looking to snoop on a girlfriend's whereabouts (not that we'd ever advocate such a thing).

CATSeye transmitters can be located via a web browser, and location information stored for future reference. Using the web interface, you can locate the device down to a specific address. The company is also selling TomTom devices with the tracking device pre-installed (privacy advocates will just love this pairing of technologies)...