what is QR Codes ?

QR Codes may be occasionally useful but most often needless. You can find qr codes in stores, posters, magazines, ads and even in some websites. You only scan them if you really need to or find the ad/information interesting .
scan this code with your mobile 
History of QR Codes
In the 1960s when Japan entered its high economic growth period, supermarkets selling a wide range of commodities from foodstuff to clothing began to spring up in many neighborhoods.
"Cashiers desperately longed for some way to lighten their burden."
The invention of barcodes provided a solution to this problem. Subsequently the POS system was developed, in which the price of an item of merchandise was displayed on the cash register automatically when the barcode on the item was scanned by an optical sensor, and information on the item was sent to a computer at the same time.
As the use of barcodes spread, however, their limitations became apparent as well. The most prominent was the fact that a barcode can only hold 20 alphanumeric characters or so of information.
Users contacted DENSO WAVE INCORPORATED (then a division of DENSO CORPORATION) who were developing barcode readers at that time to ask them whether it was possible to develop barcodes that could hold more information, saying, “We'd like the capability to code Kanji and Kana characters as well as alphanumeric ones.”
Encouraged by these enthusiastic requests, a development team at DENSO WAVE embarked on the development of a new two-dimensional code, all out of their sincere desire to accommodate users' needs.

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Cash registers that were then used at checkout counters in these stores required the price to be keyed in manually. Because of this, many cashiers suffered from numbness in the wrist and carpal tunnel syndrome.
 Types of its


QR Code is a type of 2 dimensional bar code which is used to store numeric and alphanumeric data in an encoded matrix pattern form. It was first designed and used in automotive industry in Japan (in 1994 by Denso Wave). Since then it has gained its popularity and is widely used due to its fast readability and comparatively greater storage capacity. QR Codes have since been frequently used in advertising strategy since it is more quick than manually having to type urls.
QR Codes may be occasionally useful but most often needless. You can find qr codes in stores, posters, magazines, ads and even in some websites. You only scan them if you really need to or find the ad/information interesting. The use and applications of qr codes is limited due to the resources it requires, which includes; an smartphone with camera, qr app to interpret the code and data connection to load the url or web content. QR codes were one of the coolest thing back in years when it was developed but even now lots of advertisers use these codes and there are also many websites that let’s you create one (mostly-for-free).
Where are QR Codes used?
  • General Marketing
  • Product Tracking
  • Item Identification
  • Time Tracking
  • Document Management
  • Link Sharing
  • General Details Sharing
  • Code Payments
  • Website Login
  • Popular apps like Viber, and more
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K.D'S CaFe for learning and sharing because share is care.: what is QR Codes ?
what is QR Codes ?
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