The UK-based company Blue Tree Services has developed a software program transforming an ordinary GPS phone into a GPS tracker, which allows users to track the current location of anyone who is using a cell phone or a PDA. Its accuracy is only 4 meters in all directions, which is very accurate. The software is entitled KoolTrax and costs GBP40 (approximately $80). Well, we can say that this is a great invention for parents that always want to know where their children are at the moment.
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