Hide Secret Messages in Facebook Photos With This Chrome Extension It's no secret that Facebook isn't the best place for keeping secrets. Owen Campbell-Moore, a computer science student at Oxford University, designed a method to encrypt secret messages inside photos on the social networking site. It's called Secretbook — essentially, it's a Google Chrome extension that uses JPEG Steganography to encode data into photos by making virtually imperceptible changes to the image. The message is hidden in the digital makeup of the picture, not its pixels, so it's comparable to digital invisible ink. Campbell-Moore shared the news in a blog post Monday morning.
Quantum Network Experiment Could Change The Way We Communicate : Tech Apr 09, 2013 02:07 PM EDT The theory that entangled particles, once separated, are still capable of reflecting each other instantly is a phenomenon even Albert Einstein seemed unsettled by, famously calling it, when done at a distance, "spooky." Decades after the great scientist's death, however, researchers are ready to put it into action at a distance that's never been seen before - 250 miles. As explained in a proposal published by the Institute of Physics and the New Physics Journal, researchers explain how, with only a few small changes to the International Space Station (ISS), they would be able to test the theory of quantum entanglement over a distance nearly three times that done so far. Already equipped on the ISS is the NghtPod - a Nikon camera with a 400 mm lens pointed at earth through a window in the Cupola Module. By replacing the camera with a single-photon counting module, physicists explain that they would be able to carry out two different experiments.
Touchable Holograms To Our Faithful Current.com Users: Current's run has ended after eight exciting years on air and online. The Current TV staff has appreciated your interest, support, participation and unflagging loyalty over the years. Your contributions helped make Current.com a vibrant place for discussing thousands of interesting stories, and your continued viewership motivated us to keep innovating and find new ways to reflect the voice of the people. World's oldest and stickiest lab study ready for drop of excitement In terms of output, Queensland University's pitch drop study – the world's oldest laboratory experiment – has been stunningly low. Only eight drops have emerged from the lump of pitch installed in the university's physics building foyer in 1927. Watching paint dry looks exhilarating by comparison. But excitement is now rising over the experiment, which was set up to calculate the viscosity of the world's stickiest substance, pitch, which has been found to be at least 230 billion times more viscous than water. According to Professor John Mainstone, who has run the experiment since the 1960s, a ninth drop looks set to emerge from the pitch block in the very near future.
Tor traffic disguised as Skype video calls to fool repressive governments Computer scientists have released a tool that disguises communications sent through the Tor anonymity service as Skype video calls, a cloak that's intended to prevent repressive governments from blocking the anonymous traffic. SkypeMorph, as the application is called, is designed to remedy a fundamental limitation of Tor: While the communications are cryptographically secured, unique characteristics of their individual data packets make them easy to identify as they travel over the networks. In the past, for example, the cryptographic key exchange was different in Tor transactions and the certificates used were typically valid for only a matter of hours, compared with as long as a year or two for certificates used by most Web servers. These fingerprints made it possible for government censors in Iran, China, and elsewhere to block data traveling over Tor while leaving the rest of the country's communications intact. A censorship arms race
The wireless network with a mile-wide range that the “internet of things” could be built on - Quartz Robotics engineer Taylor Alexander needed to lift a nuclear cooling tower off its foundation using 19 high-strength steel cables, and the Android app that was supposed to accomplish it, for which he’d just paid a developer $20,000, was essentially worthless. Undaunted and on deadline—the tower needed a new foundation, and delays meant millions of dollars in losses—he re-wrote the app himself. That’s when he discovered just how hard it is to connect to sensors via the standard long-distance industrial wireless protocol, known as Zigbee.
The Solar Batteries Rechargeable Batteries with Solar CellsProject by Knut Karlsen At home i always have some batteries lying around, either rechargeable or normal ones. Usually they are empty, but i'd like them to be always fully charged. I could use a normal charger and there is a lot of solar devices that charge rechargeable batteries. I wanted it simpler; why hasn't anyone made a battery with integrated solar cells? The idea of the "SunCat" batteries where born. Researchers Identify a New Form of Carbon: Grossly Warped 'Nanographene' Chemists at Boston College and Nagoya University in Japan have synthesized the first example of a new form of carbon. The new material consists of multiple identical pieces of “grossly warped graphene,” each containing exactly 80 carbon atoms joined together in a network of 26 rings, with 30 hydrogen atoms decorating the rim. Because they measure slightly more than a nanometer across, these individual molecules are referred to generically as “nanocarbons.”
Google’s Spymasters Are Now Worried About Your Secrets A recent article in The Wall Street Journal by Google Executive Chairman Eric Schmidt, “The Dark Side of the Digital Revolution,” makes for very scary reading. It is not so much because of what he and co-author Jared Cohen, the director of Google Ideas, have to say about how dictators can use new information technology to suppress dissent; we know those guys are evil. What is truly frightening is that the techniques of the totalitarian state are the same ones pioneered by so-called democracies where commercial companies, like Google, have made a hash of the individual’s constitutionally guaranteed right to be secure in his or her private space. Shutterstock photo of secrets. The dictators, mired in more technologically primitive societies, didn’t develop the fearsome new implements of control of the National Security State. Google and other leaders in this field of massively mined and shared information did.
Wireless world record: Researchers transfer data at 100Gbps through the air One of the major obstacles for delivering faster Internet to the home is the sheer amount of work and money it takes to lay the cable. Now, researchers are coming up with a workaround that transmits the data wirelessly. The latest effort, from researchers at Germany's Karlsruhe Institute of Technology, has set a new world record for wireless data transmission. They've managed to hit 100 gigabits per second while transmitting data over 20 meters, using a frequency of 237.5 GHz. A previous effort by the same group reached 40 Gbps over 1 kilometer. “For rural areas in particular, this technology represents an inexpensive and flexible alternative to optical fiber networks, whose extension can often not be justified from an economic point of view,” Professor Ingmar Kallfass said, according to TGDaily.
Why Don't You Try This?: Scientists Use Sound Waves To Levitate, Manipulate Matter A team of researchers in Switzerland have developed a way of levitating and transporting small objects using nothing but sound. Using ultrasonic waves – that is, sound waves whose frequency is too high for humans to hear – scientists at the Swiss Federal Institute of Technology in Zurich have made water droplets, instant coffee crystals, styrofoam flakes, and a toothpick, among other objects, hang in midair, move along a plane, and interact with each other. It is the first time that scientists have been able to use sound to simultaneously levitate several objects next to each other and move them around. Research published in the Proceedings of the National Academy of Sciences describes how objects placed between two horizontal surfaces, the bottom one emitting high-pitched sound waves and the top one reflecting the waves back, can be levitated and manipulated. As anyone with a subwoofer and a teenager knows, sound waves exert pressure.
Do-Not-Track Movement Is Drawing Advertisers’ Fire Do Not Track mechanisms are features on browsers — like Mozilla’s Firefox — that give consumers the option of sending out digital signals asking companies to stop collecting information about their online activities for purposes of targeted advertising. First came a stern letter from nine members of the House of Representatives to the Federal Trade Commission, questioning its involvement with an international group called the World Wide Web Consortium, or W3C, which is trying to work out global standards for the don’t-track-me features. The legislators said they were concerned that these options for consumers might restrict “the flow of data at the heart of the Internet’s success.” Next came an incensed open letter from the board of the Association of National Advertisers to Steve Ballmer, the C.E.O. of , and two other company officials. “Microsoft’s action is wrong.