According to a study published by experts from the University of Boston, Americans are exposed to these risks: users of "iOS" and "Microsoft" devices, as well as some portable devices.
The American research focused on how to connect the two electronic devices, especially because "Bluetooth" is widely used in the exchange of files and data.
The signal is intended to be randomized because it constantly changes to protect the identity of the user, but can be detected through a Bluetooth monitoring program, according to the website of Engadget.
"Most operating systems on computers and smartphones offer a random address so that they are blocked in the long run," the researchers said.
Windows 10, iOS and MacOS, which often transfer important data between different platforms, are free of risks, especially because the information that is changed is not numbered.
The researchers found that users of Android devices are not exposed to this problem and explained that the gap does not allow data hacking or stealing, but it allows knowing the location of the device owner.
To avoid this gap as much as possible, experts advise that the Bluetooth feature is off and open only when necessary, but assert that this is not the only device to spy on and monitor the device at this time.