Most of the times people near the traffic signals wasting time because of the particular time is fixed in changing signal eventhough no one is moving. Hence by using the sensors (like SICK's mid range distance sensors-DL50 which are cheaper and accurate),

This design idea utilizes inexpensive webcams to add touch input and smart board features to ANY monitor.

The webcams are pointed at the screen from the left and right sides at a distance of about one foot.

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