This sounds very interesting.
low-cost, fingernail-sized radar chip package that could be implemented in a variety of areas, including the automotive industry, robotics and smartphones.
The chip package measures 8 x 8 mm (0.3 x 0.3 inches), operates at 120 GHz, and can calculate the distance of an object up to around 3 meters (10 feet) away, to an accuracy of within 1 mm. It can also detect moving objects, and their velocity, by using the Doppler effect.
Edit:The winning combination of tiny size and inexpensive manufacturing process, which should allow the chip to be produced for roughly €1 (US$1.29) per unit, opens up possibilities for its implementation in several areas, such as automatic door system controls, cars, robotics, and even smartphones.
A link to the project's website: http://www.success-project.eu/