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Talking Recordable Envelopes
sandipan S
sandipan S May 06, 2013
Talking Recordable Envelopes

I've seen these sensors...

Often 0
Occasionally 3
Rarely 2
Never 5
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Similar Photos: Mobile tower in Dhaka Almost every car is now equipped with parking sensors On my bike ride this morning, I took this picture of pavement sensors under the road that sense when to change the traffic light.

Idea Collaboration by  MindMixer