The Galaxy S4 smartphone from Samsung can be wirelessly recharged using the Qi specification, Lucas Mearian writes. Samsung has collaborated with Qualcomm on an alternative wireless-charging spec, WiPower. "That's where the future is headed," Samsung's Michael Lin says. "The use cases are just more compelling. That's why we've invested so much in developing it. We think it will address the charging needs of a much wider audience."

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