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A quick response or QR code is a square or two-dimensional bar code. Customers can then scan these with their mobile phone. The QR code then connects the customer to a website or a video that gives them more information about the product. As the technology gains popularity, more consumers are scanning these QR codes. Websites like QRstuff.com and Delivr.com are making it easy for even small businesses to use these QR codes for free. Entrepreneurs have now put these QR codes to use in very innovative ways. Here are a few that may give...