How to Generating QR Codes And Bar codes in Python [Bangla] Python Bangla tutorial | QR Code Part-7

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What is QR and Bar code ?
A QR code (abbreviated from Quick Response code) is a type of matrix barcode (or two-dimensional barcode
invented in 1994 by the Japanese automotive company Denso Wave. A barcode is a machine-readable optical
label that contains information about the item to which it is attached. In practice, QR codes often
contain data for a locator, identifier, or tracker that points to a website or application. A QR code
uses four standardized encoding modes (numeric, alphanumeric, byte/binary, and kanji) to store data
efficiently; extensions may also be used.
The Quick Response system became popular outside the automotive industry due to its fast readability and
greater storage capacity compared to standard UPC barcodes. Applications include product tracking, item
identification, time tracking, document management, and general marketing.
A QR code consists of black squares arranged in a square grid on a white background, which can be read by
an imaging device such as a camera, and processed using Reed–Solomon error correction until the image can
be appropriately interpreted. The required data is then extracted from patterns that are present in both
horizontal and vertical components of the image.[From Wikipedia ]

History of QR Code ?
The QR code system was invented in 1994 by Masahiro Hara from the Japanese company Denso Wave. The
initial design was influenced by the black and white pieces on a Go board. Its purpose was to track
vehicles during manufacturing; it was designed to allow high-speed component scanning. QR codes are now
used in a much broader context, including both commercial tracking applications and convenience-oriented
applications aimed at mobile-phone users (termed mobile tagging)

How to use QR and Bar Code ?
QR codes have become common in consumer advertising. Typically, a smartphone is used as a QR code scanner,
displaying the code and converting it to some useful form (such as a standard URL for a website, thereby
obviating the need for a user to type it into a web browser). QR code has become a focus of advertising
strategy, since it provides a way to access a brand's website more quickly than by manually entering a
URL

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0:00:00 Introduction
0:00:09 What is QR Code ?
0:00:19 How to make QR Code ?
0:00:25 where use to use QR Code ?
0:01:08 How to make QR Code in image ?
0:01:47 Start Coding for QR Code
0:08:50 Start Coding for Bar Code
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বাংলায় ওয়েব ডিজাইন,ওয়েব ডেভলপিং এবং রোবটিক্স ও ডাটা সাইন্টিস্ট শেখার এক অনন্য প্ল্যাটফর্ম হলো নোঙ্গর হাব। খুব সহজে এবং ভালোভাবে শিখতে আমাদের চ্যানেলটি সাবস্ক্রাইব করে পাশে থাকুন।