1. DKTE’s Textile & Engineering Institute
Electronics Department
Seminar on
BARCODE TECHNOLOGY
Presented by:
Neeta Bhimrao Chavare

2. Key Points :
• What is barcode?
• Why use barcodes?
• Barcode types
• Working of barcode
• Advantages
• Application
• What is QR code
• Inside QR code
• Advantages
• Application
• References

3. What is barcode?
 It is an automatic identification technology.
 Bar code is a predefined format of dark bars and white
spaces.
 Structured to contain a specific piece of information.

4. Why use barcodes?
 As far back as the 1960s, barcodes were used in
industrial work environments.
 In the early 1970s, common barcodes started appearing
on grocery shelves.
 Today, barcodes are just about everywhere and are
used for identification in almost all types of business.

5. Barcode Types
There are two types of barcodes:
1. Linear/1D barcodes.
2. 2D barcodes.

6. Working of Barcodes
 A bar code consists of a series of parallel, adjacent bars
and spaces.
 A bar code reader decodes a bar code by scanning a
light source across the bar code and measuring the
intensity of light reflected back by the white spaces.

7. Advantages
 Represent unique identity
of a product.
 Accuracy of data input.
(error free)
 Labor savings by avoiding
manual system.
 More accurate dispatch.
 Cost efficient.
 Real time data collection.
 Measurement of work in
progress throughout the
factory.
 Rapid access to total
production costs.

8. Application of Barcode
For Laboratories FOR LIBRARIES
FOR INDUSTRY

9. QR Code

10. What is QR Code…?
QR code: Quick Response code
• Is a 2-D bar code
• Used to encode
information(URLs,
automated SMS, text data)
in two dimensional space.

11. BARCODES V/S QR CODES
 Stores data in two dimensions unlike the 1-D barcodes.
 High storage capacity in less space.
 Can be scanned by any smart phone with the app
installed.

12. INSIDE QR CODES
 Finder Patterns: Finds if the given code is a QR Code
 Timing Pattern: Tracks the timing of the incoming code
 Separators: Separates data from the patterns
 Alignment Pattern: Tells about initiation & Separation of data.
 Dark Module: A black module placed beside the bottom left
finder pattern.

13. QR CODE GENERATION
 DATA ANALYSIS
 DATA ENCODING
 ERROR CORRECTING
 STRUCTURE FINAL MESSAGE
 DATA MASKING
 FORMAT INFORMATION STRING

14. Advantages
 QR codes are not time limited in anyway and don’t
expire.
 You can generate as many as you need.
 There are no limits on the number of times they can be
scanned.

15. Application
 Human tracking robot using QR codes.
 Most commonly used barcode as of recent especially
with mobile phones.

16. Reference
International Journal of Emerging Trends & Technology in
Computer Science (IJETTCS) Web Site: www.ijettcs.org Email:
editor@ijettcs.org, editorijettcs@gmail.com ISSN 2278-6856
H. Aoki, S. Matsushita: “Balloon Tag: (In)visible Marker Which
Tells Who’s Who,” Proc.of the 4th IEEE International Symposium
on Wearable Computers, pp. 181-182 (2000-2010)

17. Thank You!