Some researchers of the University of Washington have discovered that it is possible to activate the voice assistants' functionality of smartphones also through the ultrasound.

In a presentation at Network and Distributed System Security Symposium As of February 24, the same researchers explained that the conditions for succeeding in this strange hacking are rather rare. Their relationship is long 20 pages, but a summary is available on the Washington University.

The process requires a device that emits ultrasound, therefore waves that are not audible to the human ear, to reach a phone placed on a table. In this way, the researchers were able to activate many functions, from taking pictures with the front camera to reading passwords. 15 phones out of 17 tested proved vulnerable to this operation.

The experiment works through different materials and according to Professor Zhang, a member of the team of researchers, manufacturers must disclose the vulnerability to inform owners of these phones of the risk they are running.

Fortunately, it is very difficult for such a hack to be done in public. In fact, a layer of soft material is enough to stop it. As long as you have the phone in your pocket, in short, you will be safe. No scenarios from Watch Dogs thenhowever, this does not mean that this method cannot however be used for more targeted hacking.