Communications

4G mobile communications system is vulnerable to location tracking

The study uncovered several vulnerabilities using monitoring of mobile communications and setting up fake base stations in laboratory environments.

4G was thought to provide strong privacy and availability guarantees for mobile users, assuming that for instance tracking the user movement would be impossible or ineffective.”

“We built a 4G fake base station and showed that most popular phones can be tricked into giving up location information or degrading their service level, states Professor N. Asokan. Continue reading

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Bridging the human-computer interaction

For most people, using a computer is limited to clicking, typing, searching, and, thanks to Siri and similar software, verbal commands.

Compare that with how humans interact with each other, face to face — smiling, frowning, pointing, tone of voice all lend richness to communication.

With the goal of revolutionizing everyday interactions between humans and computers, Colorado State University researchers are developing new technologies for making computers recognize not just traditional commands, but also non-verbal ones — gestures, body language and facial expressions. Continue reading

Record-setting flexible phototransistor revealed

Inspired by mammals’ eyes, University of Wisconsin-Madison electrical engineers have created the fastest, most responsive flexible silicon phototransistor ever made.

The innovative phototransistor could improve the performance of myriad products — ranging from digital cameras, night-vision goggles and smoke detectors to surveillance systems and satellites — that rely on electronic light sensors. Integrated into a digital camera lens, for example, it could reduce bulkiness and boost both the acquisition speed and quality of video or still photos. Continue reading