ARLINGTON, Va. (WUSA9) -- Arlington County police say it took less than an hour to locate a 29-year-old autistic man who wandered away from his group home. Police say the man was wearing a tracking ...

Now a new technique has been developed where such tracking takes place with the help of ultrasonic sounds and is called – Ultrasonic Cross-Device Tracking. Using this technique, advertisers embed high ...

Bringing GNSS navigation further indoors by adding new users to a collaborative network can help realize the concept of ubiquitous navigation. Increasing the number of receiver nodes to improve signal ...