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I am designing an information kiosk with touch screen to display information in a museum. I would like to provide it with a proximity sensor so that the dormant screen would come on whenever a visitor is close to the screen. control under windows 7 would be nice so that a software script would run at the same time.. What is the best way to achieve this ?..

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  • \$\begingroup\$ Probably an IR motion sensor or simple detection of ambient light change - note how many big-box stores dim their freezer cases until you walk into the aisle. Possible an old-style microwave motion detector. Or maybe, for very close ranges, a capacitance setup. Something like an Arduino Leonardo that can emulate an HID device like a mouse might not be a bad experimental interface - when your decided sensor condition is met, simulate a mouse movement or keypress to wake up the windows box. \$\endgroup\$ – Chris Stratton Jan 6 '15 at 23:29
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    \$\begingroup\$ To get some clever ideas, search for other proximity sensor questions on this server. \$\endgroup\$ – Al Kepp Jan 6 '15 at 23:31
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Many good ideas for a detection sensor were already mentioned above, I would like to add an ultrasonic sensor.

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  • \$\begingroup\$ Good point - they are cheap, easy to work with, and easily gated to ignore echoes beyond the range of interest. But you might need beam modifications or multiple units to cover a wide viewing angle if that is desired. \$\endgroup\$ – Chris Stratton Jan 7 '15 at 5:32

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