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radio waves
Wireless Temperature Sensor Chip
Miniature Battery-Free Temperature Sensor Is Powered By Own Router’s Radio Waves

BySteve Pak | Dec 09, 2015 06:26 AM EST

New iPhone case can charge the phone by trapping radio frequencies
New iPhone Case Harvests Radio Signals to Charge The Phone

BySovan Mandal | May 06, 2015 04:25 PM EDT

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