Bluetooth devices like iPhone's and Microsoft tablets can be tracked by intercepting Bluetooth signals according to researchers. Researchers say a vulnerability in Bluetooth communication may expose users to spying. FitBits are among the most vulnerable devices say researchers as they make no attempt to randomize communications. To help avoid being tracked researchers say you should turn your Bluetooth off when not in use. These 'advertising events' can be used to uniquely identify devices say researchers.

Source: Daily Mail July 17, 2019 22:30 UTC