Many fitness trackers and smartphones use Bluetooth Low Energy technology (BLE) to communicate back and forth or with beacons in the environment. Some 90 percent of devices may use the tech by 2018. But, reports V3, researchers at security firm Context have found they can track specific devices using BLE within 100 meters. “The information could be used for social engineering as part of a planned cyber attack or for physical crime by knowing people’s movements,” Context’s Scott Lester said. Context has even created an app that scans, detects and logs wearable devices using BLE to show how easy it is to track the signals.
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