What is A QR code
QR code stands for Quick Response Code .It is a type of Barcode .It is a machine-readable optical label that contains information about the item to which it is attached. It is read by the QR codes reader applications .
A QR code is black squares arranged in a square grid on a white background as shown in upper image. This digital image contain information .This information can be read by an imaging device such as a compatible camera, bar code scanner or a smartphone etc .When device scan this square grid. It extract the data from the patterns that are present in the image.
Example : In the upper QR code contains URL of the this website “http://tectrick.org” . If you scan this code you will get the link “http://tectrick.org” .
Why QR Code Are Popular
The QR code system became popular due to its fast readability . Its data storage capacity is greater than UPC barcodes. On other benefit of this coding system is that user can insert the large industrial data in it .
How To Create And Print QR Code To Use it
There are many Online application are avalablie to create or generate qr codes . Such as
you can create your own code using these free tools. After creating code save it as .pdf , .png , .jpg file format and print on a paper. After create it simply paste or tag this code image label on the product which data contains in the code .
How To Scan QR Codes
To scan QR codes you have required required scanning devices and scanning application to extract data from the code image . You can use bar code scanner, your smartphone or camera as a code reader device .Suppose you want to read a code using your smartphone then your have to download QR code reader application . Download the app , install it and scan the image code using the app .