At the University of Utah, engineer Neal Patwari and doctoral candidate Joey Wilson founders of Xandem is building the x ray surveillance device using radio waves to see through obstacles. Their network of radio transceivers measures the signal strength to reveal the locations of people or objects in the area. The system can find targets in the dark and through walls, smoke, or trees. Patwari and Wilson are currently working to expand the transceivers’ range, currently 50 feet. For now the detector can follow only a single individual, Patwari says to Discover Magazine, “but we will soon be able to track multiple people or objects and tell the difference between them.” The technology could find applications in fire rescues, hostage situations, and border security."

#1 Digital Capsule

A digital sensor powered by stomach acid can alert your doctors about your health and your treatment habits. The technology consists of a tiny, silicon-based sensor that, at 1mm wide (roughly the size of a grain of sand), can be consumed via pills and pharmaceuticals and pass through the body much like high-fiber food. The disposable patch, which has a life span of seven days, collects several metrics, including heart rate, temperature, and body position, and relays that information to a mobile-phone app.

The digital unit is  completely powered by stomach fluids and the one developed by Proteus has received FDA approval in July last year.

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