What is a QR code and how it works?

What is QR code?
​​What is QR code actually and how it works?

QR code is a technology that desperately needs our attention. We can see these codes almost everywhere from magazines and supermarket shelves to hiking trails and tombstones.
Quick Response code or QR code is the trademark name for the two-dimensional barcode system. It was invented in the year 1994 by Denso Wave, a Toyota subsidiary, for tracking vehicles as they were assembled and for scanning components at high speeds. Though Denso Wave does hold the patent on the technology, it has granted a free license on it publishing the specifications online for everyone to use it.
The conventional one-dimensional barcodes that we see in almost every consumer product are scanned mechanically. That is, they’re read by pointing a narrow beam of light onto the code. The pattern of light reflected off the white gaps between the lines helps to interpret the code.

Green colored QR Code; Image Source: windowsreport.com

Click here to know how QR Codes work.

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