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What is a Quick Response Code?

A QR or Quick Response code is a popular barcode symbology. It is a two-dimensional barcode. These are often used for adding web links to a printed page. When you scan such a QR bar code using a web cam or mobile phone camera, the QR reader application takes you to a website, a YouTube video, or some other web content. QR codes are an easy way of sending people to a site without having to type a URL. Here is an example of a QR Code:

In addition to being used for linking to share links, QR codes can contain other types of information:

  • A QR code on a business card can contain an electronic version of the contact information. Scan the code and the reader application adds the contact to your address list.
  • A QR code can contain event information. Scan the code on a poster for a concert and the app automatically adds its name, date and location to the agenda on your smartphone or PC.
  • A QR code can contain an SMS with phone number and text. Scan the code and the scanning app lets you automatically participate in some contest to win fabulous prices.
  • A QR code can contain an e-mail message with a subject and message text. That message can be a request for information so that in return you might get a reply email with additional information and attached files.
  • A QR code can contain a geographical location. Scan the code on a poster advertising for a restaurant and its location becomes available to your navigation software, informing you how to get to that place.
  • A QR code can contain WIFI configuration data. Scan the code and your Android device automatically configures itself to use the wireless access at the hotel.

There are still more ways in which QR codes can be used. The above list only summarizes the main applications. Originally this technology was created for tracking parts in manufacturing processes.

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