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from restaurant menus to airplane boarding passes business cards digital marketing concert tickets and more qr codes are used everywhere you simply take your phone open the camera and direct it to the code and just like that youamp;#39;re given the link to open a website hey there my name is uma and in this video iamp;#39;ll be explaining the technology behind qr codes and how they work letamp;#39;s jump into it a qr code is short for quick response code it is a code that is quickly readable by a cell phone or a similar scanning device hence the word quick in the name using a combination of spacing as a type of 2d matrix barcode when the code is scanned it conveys a multitude of information to a device the qr code is similar to the regular barcode we are used to in the sense that they both convey information to a scanner the major difference is that the regular barcode can only be read in one direction from top to bottom using the width of the lines to store information because of t
