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Secret Codes
They're popping up in advertisements, on buses, even on plants. They're known as QR Codes, or Quick Response codes. And we'll tell you what they can reveal.
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Secret Codes
They're popping up in advertisements, on buses, even on plants. They're known as QR Codes, or Quick Response codes. And we'll tell you what they can reveal.
Date: 5/18/11
Views: 35
Video by:  NBC Connecticut
 
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