What are "QR Codes?"

QR codes, or quick response codes, is a type of 2D bar code that may be decoded using your smartphone with a QR code reader.  From being a tracking mechanism for auto parts, QR codes have proven to be very useful in marketing and convenience related applications that is more suitable for smartphone users.

  In the recent months, we have seen QR codes show up on marketing materials such as movie posters, promotional posters for various products, billboards, flyers, among other things. These have also been seen on newspaper ads, business cards, artwork, and other everyday things.

There are two main things that you have to have when you deal with QR codes:

1. A mobile phone with a camera and Internet connectivity
2. A QR code reader