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The Fukushima Dai-ichi nuclear plant disaster has led to heightened interest in detecting the presence of radiation. To that end, engineers at NTT DoCoMo have developed a smartphone case called the Sensor Jacket, which turns the handset into a mini Geiger counter. The company unveiled the device at the CEATEC Japan 2011 electronics show but have yet to set a price or date for its commercial introduction.
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