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LED data transmission used to be all the rage -- we fondly remember beaming Palm Pilot contacts via IrDA. Then we got omni-directional Bluetooth and building-penetrating WiFi, and put all that caveman stuff behind us. But now, scientists the world over are looking to bring back line-of-sight netw...

4 years ago 0 Comments
May 17, 2010 at 8:22PM
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We love our WiFi, but it's far from perfect. Speed depends greatly on conditions, magnetic waves don't always play nicely with sensitive equipment, and the ability for someone to drive by and steal your precious infos is always disconcerting. Researchers at Penn State have what they believe is a be...

5 years ago 0 Comments