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A school in Samambaia, a city next to Brasília, is testing a controversial sensor in the uniform to control the student attendance.
Pedro V
Pedro V May 08, 2013
A school in Samambaia, a city next to Brasília, is testing a controversial sensor in the uniform to control the student attendance.

I've seen these sensors...

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Similar Photos: Arlington National Cemetery now has a great new way/ app for visitors - I tried this for the first time at the beginning of the year. http://www.macrumors<wbr/><span class="wbr"></span>.com/2011/10/25/ipod<wbr/><span class="wbr"></span>-creator-tony-fadell<wbr/><span class="wbr"></span>s-next-quest-is-to-r<wbr/><span class="wbr"></span>evolutionize-thermos<wbr/><span class="wbr"></span>tats/ A very common use of infrared sensors

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