An anonymous reader writes: Senior researcher Scott Lester at Context Information Security has shown how someone can easily monitor and record Bluetooth Low Energy signals transmitted by many mobile phones, fitness monitors, and iBeacons. The findings have raised concerns about the privacy and confidentiality wearable devices may provide. “Many people wearing fitness devices don’t realize that they are broadcasting constantly and that these broadcasts can often be attributed to a unique device,” said Scott says. “Using cheap hardware or a smartphone, it could be possible to identify and locate a particular device – that may belong to a celebrity, politician or senior business executive – within 100 meters in the open air. This information could be used for social engineering as part of a planned cyber attack or for physical crime by knowing peoples’ movements.” The researchers have even developed an Android app that scans, detects and logs wearable devices.