QR Code Technology Guide by Tatva Tech Digital

Unlock the full potential of QR Code Technology with Tatva Tech Digital’s expert guide. Discover how QR codes work, the underlying QR code logic, and the differences between static vs dynamic QR codes. Learn about the types of QR codes and explore their real-world uses across industries like marketing, healthcare, payments, and education. From QR code history to advanced functionality, this guide covers everything you need to know to implement QR codes effectively in your digital strategy.

1. Everything you need to know
about QR Code Technology: How It
Works, Logic, and Uses Tatva Tech
IT Company
September 16, 2025 by info_tatva
Search
Search
Recent Posts
Recent
Comments
No comments to show.
Introduction: What is QR Technology?
QR codes, or Quick Response codes, are two-dimensional barcodes that can contain extensive
amounts of information in a small square. Unlike other barcodes, which only store information
horizontally, QR codes store information both horizontally and vertically, making them efficient
and flexible.
QR technology is a bridge between the physical and digital world that allows users to access
information at a glance through scanning devices like smartphones, QR scanners, or cameras.
Purpose of QR Technology:
Instant, contactless interaction between objects and digital systems.
Simple access to URLs, contact details, payments, event tickets, and more.
Make it possible for businesses and consumers to transfer data effectively.
History of QR Codes: Who Discovered It,
When, and Why
QR codes were developed in 1994 by Masahiro Hara, a Denso Wave engineer in the Toyota
Group subsidiary of Japan. The technology was devised to address an industrial problem:
efficiently tracking auto parts during manufacturing.
Why QR Codes Were Developed
Conventional barcodes were limited in the following ways:
Limited capacity to store data (usually 20 digits)
Slow scan because of the requirement of accurate alignment
Prone to damage, which made tracking less accurate
Masahiro Hara and his colleagues created a two-dimensional code that was able to:
Hold more data than standard barcodes
Be read from any orientation
Everything you need to know
about QR Code Technology: How
It Works, Logic, and Uses Tatva
Tech IT Company
Instamart’s Quick India
Movement 2025: Ajay Devgn
Reshoots Classic Split for
Festival Mega Sale
Everything You Need to Know
About Website Migration
SMO vs SMM: Difference
A-8, 1st Floor, Sector-68 Noida - 201309 [email protected] [phone]
HOME ABOUT US SERVICES

REQUEST APPOINTMENT

2. Have error correction so that partially impaired codes could still be scanned
Offer flexibility for use in industry and subsequently commerce
This innovation generated the square grid of black and white modules we currently see as a QR
code, able to encode numbers, text, symbols, or binary data.
How QR Technology Works
QR codes work by converting information into a scannable digital format. Here’s a step-by-step
explanation:
1.Data Encoding
Data like a URL, text, or payment information is translated into binary form (0s and 1s) first.
2.Constructing the QR Code Matrix
Binary data are formatted into an array of black and white modules in a square format. Each
element has a specific function shape:
Position markers – Big squares in three corners to identify orientation
Alignment patterns – Small squares for legibility on tilted surfaces
Timing patterns – Interleaving black and white modules to specify grid pattern
Data modules – Store the actual data
3. Error Correction
QR codes apply Reed-Solomon error correction, so they can still work if up to 30% of the code is
destroyed.
4. Scanning and Decoding
When scanned:
1. The scanner takes a picture of the QR code.
2. Scanning software detects position and alignment markers.
3. Binary information is translated into original data.
4. The information is shown or performed, for example, in opening a webpage or making a
payment.
Analogy: A QR code is like a secret language. The scanner immediately converts it into useful
information.
The Logic Behind QR Codes
The layout of the QR code makes scanning quick and accurate:
Position Detection Patterns – Find the code and its direction
Alignment Patterns – Align with distorted curves
Timing Patterns – Keep grid in its correct alignment
Data & Error Correction Modules – Save data and avoid mistakes
This logical framework makes QR codes operate consistently even under less-than-perfect
circumstances, that is why they’re heavily used in the real world.
Types of QR Codes
QR codes vary according to functionality, size, and flexibility. There are four types:
1. Static QR Codes
Permanent data that can’t be modified once built
Ideal for permanent materials such as product guides or business cards
Example: QR code on product box pointing to a user guide
Feature: Easy, trustworthy, permanent
2. Dynamic QR Codes
Data can be edited without reprinting a new code
Ideal for marketing campaigns, promotions, and measuring engagement
Example: Daily changing restaurant menu or campaign QR code with changing offers

3. Feature: Flexible, editable, and trackable
3. Micro QR Codes
Miniature version of standard QR codes for less space
Holds up to 35 numeric or 21 alphanumeric characters
Example: QR codes on jewelry labels or electronic parts
Feature: Small and efficient for small labels
4. Model 1 vs Model 2 QR Codes
Model 1: Original 1994 design, limited size and error correction, mostly obsolete
Model 2: Contemporary, ubiquitous, greater data capacity, greater error correction,
extra alignment patterns
Example: Most QR codes on packages, tickets, and apps now are Model 2
Feature: Strong, reliable, backward compatible
Real-World Uses of QR Codes
1. Payments and Digital Banking
QR codes enable quick, contactless payments through apps such as Google Pay, Paytm,
PhonePe, and PayPal.
Example: Indian small businesses make digital payments with printed QR codes.
2. Marketing & Advertising
Bind offline consumers to online content:
Posters, flyers, packaging
Websites, videos, coupons, and interactive campaigns
Example: Coca-Cola QR codes on bottles unlock AR experiences for the consumer.
3. Retail & E-Commerce
QR codes enhance shopping experiences by linking to:
Product information
Customer reviews
Discounts and loyalty schemes
4. Healthcare
Utilized for:
Patient identification
Digital health records
Checking prescriptions
Vaccine certificates
Example: COVID-19 test results and vaccine passports sent through QR codes.
5. Travel & Hospitality
Use cases include:
Boarding passes
Hotel check-ins
Contactless menus and services
6. Education
QR codes distribute learning material, assignments, and online classroom access.
7. Security & Authentication
QR codes are popular in two-factor authentication (2FA), securely linking accounts to apps used
for authentication.
Advantages of QR Codes

4. Blog
Instamart’s Quick India Movement 2025: Ajay Devgn Reshoots Classic Split for Festival Mega Sale
Quick scanning
Flexible storage (URLs, text, payments)
Cost-effective
Long-lasting, functions even if damaged
Contactless and secure
Dynamic, trackable codes offer analytics
Challenges and Limitations
Needs devices (smartphones/scanners)
Security threats (malicious QR codes or QRishing)
Sensitivity in design (over-customized codes will not work)
Gap in awareness (some users might not be aware of how to scan)
Security Issues: QRishing
Cybercriminals can swap genuine QR codes with malicious ones. Scanning can:
Direct to phishing sites
Inject malware
Steal sensitive data
Safety Tips:
Scan codes only from trusted sources
Use security-enabled scanners
Avoid suspicious or unfamiliar QR codes
Future of QR Codes
QR codes are transforming with IoT, AI, and AR:
Smart Packaging: Complete product life cycle information
AR Experiences: Immersive 3D content
Digital Identity: e-Passports, digital identities, secure identity
Healthcare Integration: Integrate wearable devices for tracking
IoT Connectivity: Integrate physical devices directly with cloud platforms
How Businesses Can Use QR Codes
Marketing campaigns with engaging content
Guiding users to support, FAQs, or tutorials
Retail and logistics: inventory tracking and order tracking
Analytics: monitor scan locations, devices, and user activity
Event management: registration, ticketing, attendance tracking
Best Practices for QR Codes
Apply high contrast (black/white) for legibility
Use sufficient size
Test on various devices
Utilize dynamic QR codes for updates and analytics
Make destination content mobile-friendly
Conclusion
From factory origins to international digital ubiquity, QR technology has revolutionized the way
we communicate, conduct transactions, and retrieve data. Knowing its history, reasoning, kinds
(Dynamic, Static, Micro, Model 1/2), applications, and security features, entrepreneurs and
individuals can use QR codes securely and effectively.
QR codes will keep unifying the physical and digital realms, offering quick, secure, and touch-
free connections across sectors.

5. Leave a Comment
Name *
Email *
Website
Save my name, email, and website in this browser for the next time I comment.
Post Comment
Empowering progress through purposeful innovation. Driving digital
transformation across industries, connecting artisans and commerce
globally.
Important Links
Home
About Us
Services
Contact Us
Services
ERP Development
Digital Marketing
IOT
CMS Development
App Development
Security & Automation
Hardware
Contact
[email protected]
[phone]
A-8, 1st Floor, Sector-68
Noida - 201309
©2025 Copyright | Powered by Tatva Tech Digital