How To: Use QR or quick-response bar codes with your cell phone

Use QR or quick-response bar codes with your cell phone

Have you seen odd, square codes on some specific merchandise? These are called QR codes, or quick-response codes, and they are a type of bar code which your smartphone can read and then take you to a particular website, give you coupons or even a business card. Here's how you can get the most out of QR codes.

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