Your Bluetooth enabled handset could be used to monitor your activities, if you're a citizen of Bath this may have already happened. Vassilis and Panos Kostakos in the department of computer science and the University of Bath in the UK, who have come up with a system that they say could spot and monitor these kinds of interactions in prisons. Their idea? Fit inmates with RFID tags that allow their positions to be monitored, and then number crunch the resulting data sets to see who spends the most time with whom. Anonymously monitoring the movements of students, residents and workers of the city of Bath by listening out for their Bluetooth-enabled devices as they move around the city and that is what they've done. What the Kostakos found is that it is straightforward to capture data on people's encounters using Bluetooth.

In fact, they captured data on 10,000 unique devices during the 6 month study. Exactly how much you can tell about these encounters is not clear. However, since this is only a demonstration they would not be divulging too many details anyways. Next time you are planning to meet up that hot babe from another campus, make sure you turn your Bluetooth off so your girlfriend isn't aware.

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