Wireless

Two years ago, University of Utah assistant professor of electrical engineering Neal Patwari demonstrated how radio signals could be used to “see” people through solid walls. Now, he is leading a team that is using that same technology to wirelessly monitor peoples’ breathing as they sleep. The system could be particularly useful for observing patients who are recovering from surgery, people with sleep apnea, and babies who are at risk of sudden infant death syndrome (SIDS). While respiration-monitoring systems do already exist, Patwari’s doesn’t require anything to be physically attached to the subject’s body, plus he claims that it should be cheaper. Read More

Earlier this year, Stanford University researchers created a full-duplex radio that allowed wireless signals to be sent and received simultaneously, thereby doubling the speed of existing networks. Using the same approach, researchers at Rice University have now developed similar full-duplex technology that would effectively double the throughput on mobile networks without the addition of any extra towers. Read More

How many people out there like headphone cords? Probably not a great number, but audiophiles will tell you that hard-wired headphones offer far superior sound quality than their wireless counterparts. Sennheiser, however, would have us believe otherwise. The company states that thanks to its Direct Sequence Spread Spectrum (DSSS) technique, its new RS 220 wireless headphones sound like they’ve got a cord coming out of ‘em. Read More

San Francisco's Sifteo Inc has confirmed that its cube-based, interactive educational gameplay system we looked at back in March is now ready for release in the U.S. and Canada. The Sifteo Cubes system takes timeless building blocks play and learning and gives it a modern update - with a color display, embedded computer system and sensing technology. Read More

Cellular-based automotive roadside assistance services like GM’s OnStar and BMW Assist allow remote unlocking of vehicles by communicating with remote servers via standard mobile networks. Now a pair of security systems engineers have managed to prove it takes just a few hours of clever reverse engineering to crack the in-car cellular network-based technology to gain access to vehicles. They call their method “War Texting.” Read More

I think it's fair to say that many music loving mobile device users are left somewhat wanting when it comes to built-in speakers. Listening to audio either involves having to wear cumbersome earphones or sacrificing device usability to plonk it in a dedicated docking station. You can, of course, just dock your device in Soundfreaq's new Sound Step speaker and top up the battery while listening or you could keep your mobile device where it should be - in your hands. Thanks to Bluetooth connectivity, users can stream audio directly to the speaker while enjoying lots of multitasking action on the device itself. Read More

Scientists from the Georgia Institute of Technology recently reported the development of what they say is the world’s “first self-powered nano-device that can transmit data wirelessly over long distances.” The tiny device is able to operate battery-free, using a piezoelectric nanogenerator to create electricity from naturally-occurring mechanical vibrations. Read More

An assassin waits for his target to walk into range, then presses a button on a radio transmitter, causing the target’s pacemaker to deliver a lethal dose of electricity. Such a scenario may be fictional for now, but as more and more medical implants are designed to wirelessly send and receive data, it becomes increasingly possible. Researchers at the Massachusetts Institute of Technology (MIT) are certainly aware of the dangers of wireless attacks on implants, so they’ve developed a countermeasure – a wearable signal jamming device. Read More

Taking on the idea that daily smartphone use can create automatic touch recall, just like touch typing on a keyboard, students at the Hasso Plattner Institute in Potsdam, Germany, have created the "imaginary phone" concept that turns the palm of a hand into a smartphone touch interface. Using spatial memory built up while operating the physical device to remember gestures and the relative position of icons on the phone, users can perform simple smartphone tasks without even taking it out of your pocket. Read More