Qr codes
•Download as PPT, PDF•
0 likes•586 views
This document discusses QR codes, including what they are, their mechanism of operation, features, applications, merits, and demerits. QR codes have a high data capacity and can store various types of information like URLs, contact information, and geolocation. They are readable from any direction and resistant to dirt or damage. However, users need a smartphone with a QR code reader, and not all phones have this capability.
Recommended
More Related Content
Similar to Qr codes
Similar to Qr codes (20)
Recently uploaded
Recently uploaded (20)
Qr codes
- 1. QR Code Reader Name : Anjalika Sinha Roll No.: 46
- 2. QR Code
- 3. Agenda What is QR Code? Mechanism Features Applications Merits Demerits
- 4. What is QR Code QR Code Data Capacity: Numeric Code = 7,089 characters max Alphanumeric code = 4,296 characters max Binary = 2,953 characters max Kanji = 1,817 characters max “Quick Response”
- 5. How to Read QR Code • Mobile device must have a camera • Start the QR reader app • Point the camera at the code – orient code within designated area
- 6. To enable the mobile phone to understand what action it needs to take when the QR Code is scanned a service type is embedded within the QR code. Some of the services: Service Example Instruction http: http://www.abc.co.uk Browse to a website mailto: mailto: abc.co.uk This e-mail address is being protected from spam bots. You need JavaScript enabled to view it Invoke an email message tel: tel: +44123456789 Telephone a number sms: sms: +4407912345678 Send a sms message
- 7. Mechanism
- 8. Features High Capacity Encoding Data Small Printout Size Kanji capability Dirt and Damage Resistant Readable from any direction in 360 .
- 11. Email Address
- 12. Phone Number
- 13. Text
- 14. URL
- 15. Geolocation
- 16. • Significantly reduced manual handling. • Faster Scanning. • Small size but stores more data. • QR codes can be used to store addresses & URLs. Merits
- 17. Demerits • User must have smart phone with a correct reader software. • Not everyone is aware of QR codes. • Many cell phones do not include a QR reader. • a QR code might direct users to a website that does not display properly on a cell phone.
Editor's Notes
- ->the QR code is read by a smart phone's image sensor, then interpreted by the system processor. ->The processor locates the three distinctive squares at the corners of the image and acts as alignment targets, and uses a smaller square near the fourth corner to normalize the image for size, orientation, and angle of viewing. -> version 40 have 177 pixel square that stores 1852 characters. ->The small dots are then converted to binary numbers and their validity checked with an error-correcting code.
- –need a phone for this… not ipod touch