GPS can help you get to your favorite bookstore, but once you're there, it probably won't find that Thomas Pynchon book you're looking for. That's where KDDI's Swing navigation system comes in. Taking its cue from Nokia's Kamppi and NAVTEQ's Destination Maps services, the prototype is designed to help smartphone users find their way around malls, restaurants or any other indoor space, using only a red arrow as their compass. Just choose the section of the store you're looking for, wave your phone in a circle and KDDI's app will use a system of pre-installed sensors to find your location, before pointing you in the right direction. Seems intuitive enough, but Swing's success will ultimately depend upon how many people and retail outlets decide to adopt it. Swing past the break for a demo video.
As you may know, crafting a katana is a delicate process that involves carefully constructing a razor-sharp high-carbon edge around a soft shock-absorbent core. One day though, smiths and forging fires could be replaced by electrode-wielding mad-scientists, with the technology to selectively harden and soften metal at will. At least that's what we envisioned when we read about Jörg Weißmüller's breakthrough research in the field of nanomaterials. The German scientist discovered that by placing precious metals in acid he could create tiny ducts through corrosion. Once those channels are flooded with a conductive liquid, electrical currents can be used to harden the material and, if you change your mind about the brittle results, the effect can easily be reversed to make it soft again. The tech could eventually lead to self-healing vehicle armor or scratch-resistant cellphones -- but, really, we just want to zap our way to a high-quality samurai sword. Physorg
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