Wireless In-Use Notification System

Why use a simple knock on the door when you can wire up a laser to tell you a bathroom is occupied? Gone are those awkward moments when taking care of business is unceremoniously interrupted. Thanks to the folks at Intuity, checking to see if somebody is in the WC is as easy as checking for the red dot of a laser or a real-time HTML5 app on your smartphone. [Thanks, Martin!]

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