It's actually a pretty cool concept. Basically, they use specialized frequencies of EM energy to transfer a charge from an antenna to a ready device. It's still just a computer model right now, but hopefully it will eventually enter the development stage. Who knows, we might someday experience something like this:
"...I'm going to have to call you back. My mobile phone's about to lose power -- Nevermind, I just passed a charger. What were you saying?"
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