Qr codes are 2D matrix barcode. It is based on bar code technology used for scanning the data of an application in android system.

1. A
SEMINAR
PRESENTATION
On
QR Codes
Session:2015-16
• Guided By : Mr. Tarun Mehta Presented by:
• Seminar Coordinators : Mohinuddin
1. Dr. Veena Yadav (PCE/CE/12/063)
2. Mr. Deepak Agarwal IV Year CS-A
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2. Content
1. Introduction
2. History
3. Technology
4. Working
5. Application
6. Version
7. Limitation
8. Future scope
9. References
10. Queries
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3. 1.Introduction
QR code is a kind of matrix 2D (two-dimensional) barcode designed by
Denso-Wave Corporation of Japan in 1994 for automotive industry. Its
benefits are high-speed recognition, strong error-correcting capability.
It is more advanced bar coding system, barcode is machine readable
optical label that contain the information about the item which it is
attached. Qr codes work on the barcodes technology and it consist of
black square dots on white background.
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4. 2.History
• The QR code system was invented in 1994 by Denso Wave.
• Its purpose was to track vehicles during manufacture; it was designed to
allow high-speed component scanning, initially used for tracking parts in
vehicle manufacturing,
• QR codes now are used in a much broader context, including both
commercial tracking applications and convenience-oriented applications
aimed at mobile-phone users.
• QR codes may be used to display text to the user, to add a vCard contact to
the user's device, to open a Uniform Resource Identifier (URI), or to
compose an e-mail or text message.
• Users can generate and print their own QR codes for others to scan and
use by visiting one of several paid and free QR code generating sites or
apps.
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5. 3.Barcode Technology
Barcode is a machine readable optical label that contain the
information about the item which it is attached. Qr codes work on the
barcode technology.Barcodes originally were scanned by special optical
scanner called Barcode reader.
Types of Barcode Technology
 1-Dimension
 2-Dimension
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6. Barcodes(1-D)
• Barcode scanners are made of
3 different parts: an
illuminator, a convertor, and a
decoder.
• The illuminator shoots out a
line of light (typically red) at
the barcode.
• Light will reflect from the
barcode (from anywhere that
is not black) in the form of a
wave.
• The convertor converts the
wave into a readable form for
the device.
• Decoder reads the converted
information
Light from Scanner
Light Reflection
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7. Barcode(2-D)
QR code (abbreviated from Quick Response Code) is the trademark for
a type of matrix barcode (or two-dimensional barcode) first designed
for the automotive industry in Japan. A barcode is a machine-readable
optical label that contains information about the item to which it is
attached. A QR code uses four standardized encoding modes (numeric,
alphanumeric, byte/binary). The QR Code system became popular
outside the automotive industry due to its fast readability and greater
storage capacity compared to standard UPC barcodes.
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9. 4.Working
• QR code is detected by a 2-dimensional digital image sensor and then
digitally analyzed by a programmed processor.
• The processor locates the three distinctive squares at the corners of
the QR code image, using a smaller square (or multiple squares) near
the fourth corner to normalize the image for size, orientation, and
angle of viewing.
• The small dots throughout the QR code are then converted to binary
numbers and validated with an error-correcting algorithm.
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10. ce dept.

11. ce dept.

12. How much info can you pack in 1 of these
puppies?
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13. Error correction
• Error correction basically used to when our QR code is damaged or
some time code is broken it due to external effect.
• In error correction we used Reed Solomon Error correction Algo.
• In larger QR symbols, the message is broken up into several Reed–
Solomon code blocks, code words are 8 bits long The code blocks are
then interleaved together.
• Due to error correction, it is possible to create artistic QR codes that
still scan correctly.
• Error correction capability at each of the four levels:
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15. Encoding
• The format information records two things: the error correction level
and the mask pattern used for the symbol.
• Masking is used to break up patterns in the data area that might a
scanner.
• The mask patterns are defined on a grid that is repeated as necessary
to cover the whole symbol.
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16. ce dept.

17. ce dept.

18. 300,000
DailyAndroidActivations
270,000
DailyiPhoneActivations
Andy Rubin, Google, December 2010
Apple, October 2010
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19. ce dept.

20. Scanlife Mobile Trend Report, December 2010
Global data Oct 2010 – Dec 2010
Mobile OS
Blackberry 23% Android 54%
iPhone
18%
Symbian
3%
J2ME
1%
Windows
Mobile
1%
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21. 5.Application
• Smartphone
• Advertisements
• Guided tours
• Uses in education
• Website login
• Marketing
• Air-ticket
• Videos
• Tracking
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22. Smartphone
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).
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23. Advertisement
• 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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24. Guided Tour
• QR codes storing addresses and URLs may appear in magazines, on
signs, on buses, on business cards, or on almost any object about
which users might want information.
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25. Education
• QR code has become a focus of Education strategy Worksheets for
students to cooperate with another student.
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26. Website login
• QR codes can be used to log in into websites: a QR Code is shown on
the login page on a computer screen, and when a registered user
scans it with a verified smartphone, they will automatically be logged
in.
• Authentication is performed by the smartphone which contacts the
server. Google tested such a login method in January 2012.
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27. Air-ticket
• Mobile QR Code is used for the boarding control system of All Nippon
Airways (ANA).
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28. 6.Version of QR codes
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29. 7.Limitations
• On a smartphone, the reader's permissions may allow use of the
camera, full Internet access, read/write contact data, GPS,
read browser history, read/write local storage, and global system
changes
• They are easily created and can be affixed over legitimate QR codes.
• Lack of familiarity of the QR code among people.
• QR code is dependability on a mobile device or smartphone.
• If consumer does not have a mobile phone then it is not beneficial.
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30. 8.Future scope
• Age verification
• Opening customer account
• Coupons
• Business tracking
• Tickets
• Authorization
• Banking sector
• Search engine optimization
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31. 9.References
• ^ "QR Code features". Denso-Wave. Archived from the original on
2012-09-15. Retrieved 3 October 2011.
• http://Wikipedia/ QR code.
• http://www.kaywa.com.
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32. Thank you
Queries????????
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