News tagged with radio signal

Secure radio signal for central locking

(PhysOrg.com) -- Remote central locking is among the most convenient aspects of modern motoring. Transmission of the radio signal that activates the system is not particularly secure, however. A new encryption ...

Feb 01, 2010 5 / 5 (1) 0

Making it easier to save energy

Fraunhofer scientists are developing programs that help show at a glance how much energy devices are consuming. At the GSMA Mobile World Congress in Barcelona, the researchers will be showing how a cell phone can help save ...

Jan 15, 2010 2 / 5 (2) 0

Wi-Fi signals can see through walls

(PhysOrg.com) -- Researchers at the University of Utah, USA, have discovered that variations in signal strengths in wireless networks can be used to "see" movements of people on the other side of walls or ...

Oct 05, 2009 4.3 / 5 (8) 2 weblog

Hurricane Katrina: Phone home

Though New Orleans residents were told to evacuate days before the arrival of Hurricane Katrina, no one could have predicted the real extent of the devastation.

Jul 06, 2009 not rated yet 0