Comcast's Xfinity has introduced a new feature in its internet routers called Wi-Fi Motion, which uses Wi-Fi signals to detect movement in your home, whether from people, pets or other moving objects.

Surveillance systems in science fiction and thriller movies always look far too futuristic, with some even sporting systems that can pick out a specific person in a crowded city street. Despite how ...

As if you didn’t have enough to worry about when it comes to surveillance, researchers have discovered a new way to identify and track people using Wi-Fi signals—and I’m not talking about anything ...