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Inventor of the cell phone says this is the next big thing

Mobile phones, '80s style

Marty Cooper, who built the first handheld cell phone, says his invention has a glaring flaw: You have to keep charging its battery.

"Keeping your phone charger around is a real annoyance," Cooper told CNNMoney in an interview. "And I think it's going to be an increasing problem."

Ensuring that your phone doesn't run out of juice is enough of a pain. But imagine the not-too-distant future when our bodies are covered with different connected devices -- watches, glasses and clothing -- all of which will need to be charged.

"You won't want to take all them off and plug them in," Cooper said. "That's why they ought to be charging all the time."

There are many companies that are attempting to do just that -- keep your wireless gadgets charged all the time. Each has a different kind of solution. Wi-Charge thinks lasers should beam signals from ceiling fixtures to cell phones. U-Beam has bet on powering phones with sound waves.

But Cooper believes that the winning technology will come from Energous, which wants to charge your cell phone using radio frequencies. Cooper sits on Energous' board.

Energous' promise is compelling: By...


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