New way to track GPS phones without contract

RF Solutions in Lewes, UK, has developed a system to allow users to track the location of the GPS/GSM handset supplied from a home or office PC without a contract with pay-as-you-go mobile and Google Internet maps
The Shadow Tracker system is installed on a base PC and polls the handset by text message. It receives the returned SMS from the handset containing GPS co-ordinates, and plots these on the desktop using free-to-access Internet-based maps. Users can also take advantage of features such as breadcrumb/time-lapse tracking and an adjustable geo-fence. The geo-fence automatically generates a warning if the handset is carried beyond user-determined limits.
The handset can store up to four preset telephone numbers, and can be used to make voice calls as well as providing GPS location data via SMS when polled. It also has a touch-activated SOS feature, which sends an emergency signal and GPS position to each of the preset numbers in sequence.
Two SIM cards are provided, for the tracker and the base station, and the system can be expanded to monitor multiple tracker units. The RF Solutions Shadow Tracker system is suitable for vehicle or personal tracking, and allows small businesses or domestic users to implement cost-effective safety and security systems. These may include alarms for lone workers, fleet tracking, valuables tracking, personal tracking, or emergency alarm systems.
RF Solutions supplies a wide range of Radio Telemetry modules with a range from a few metres to 20km. The standard range of products have been designed to provide the user with an "off the shelf" "plug-in" Radio system. Systems range from pocket keyfob to an industrial IP65 rated enclosure, with receivers ranging from a miniaturised hybrid components to compete enclosed systems with mains power supply. The GSM telemetry system can be situated in anywhere in Europe, and operated by an SMS message from a mobile phone.