Monitoring a patient’s vital signs – such as temperature and heart rate – could soon be a simple as sticking on a tiny, wireless patch similar to a temporary tattoo. Eliminating the bulky wiring and electrodes used in current monitors would make the devices more comfortable for patients, according to an international team of researchers…
DetailsA $30 toy, Mattel’s pink GirlTech IMME, an instant-messaging device with a miniature keyboard, can be used to disrupt radio communications used by every major federal law enforcement agency, reports C/Net An associate professor at the University of Pennsylvania, Matt Blaze co-authored a paper (pdf) at the Usenix Security symposium in San Francisco this week.…
DetailsIEEE has just released a new, official standard for 802.22 Wi-Fi, and it can cover 12,000 square miles with just one single base station—about the same as broadcast radio and television. This, of course, will use up spectrum including 54MHz to 698MHz—the analog TV spectrum that allowed signals to travel out that far. The new…
DetailsAs you sit there reading this story you’re surrounded by electromagnetic energy transmitted from sources such as radio and television transmitters, mobile phone networks and satellite communications systems. Researchers from the Georgia Institute of Technology have created a device that is able to scavenge this ambient energy so it can be used to power small…
DetailsBonn, Germany – The government-financed German broadcaster Deutsche Welle is to cease most of its shortwave broadcasts on July 1, with emphasis shifting to television broadcasts and the internet, the corporation said in Bonn Wednesday. Shortwave, which can cross continents, is has becoming increasingly unpopular as fewer people possess shortwave radios. In many places, listeners…
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