Invented in Japan in 1994, QR codes are short for “quick response” and can be read by camera-ready smart phones with an app. Much like with a bar code, which have been used for decades, it is easier to scan something than it is to type something.
The sudden hype around this type of technology today is due to the explosions of smart phones. Scanning QR codes from a phone is easier for users than typing, which personally I still find finicky on an iPhone, for example.
So, What Kinds of Uses Do They Have Already?
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