1. Radio Frequency Identification
rfid
Radio Frequency Identification

2. What is RFID? Radio Frequency Identification
The use of radio frequency tags to identify real objects.

3. How Does RFID Work? 3 Components Transceiver – Tag Reader
Transponder – RFID tag
Antenna
RFID
Tag
IC or microprocessor
antenna
Transceiver
Tag Reader
antenna

4. RFID system components

5. Types of Tags Passive Tags Active Tags No battery Low cost
On-board transceiver (Tag Reader)
Battery – must be replaced
Longer range
High cost

6. Types of Tags Read Only Read / Write factory programmed
usually chipless
Read / Write
on-board memory
can save data
can change ID
higher cost

7. Some RFID readers
Source:

8. Current Applications Livestock Tagging Wild Animal Tracking
Electronic Article Surveillance (EAS)
Automated Toll Collection
Vehicle Anti-Theft
Goods tracking
Passive / Secure Entry
Airline Baggage Tracking
Postal Package Tracking
Time and Attendance

9. Livestock Tagging

10. Automated Toll Collection

11. Package Tracking
Picture courtesy Texas Instruments

12. Smart Grocery Store
Several carts this full in early evening could seriously slow down the checkout process.
How much do cashiers cost?

13. RFID advantages over bar-codes
No line of sight required for reading
Multiple items can be read with a single scan
Each tag can carry a lot of data (read/write)
Individual items identified and not just the category
Passive tags have a virtually unlimited lifetime
Active tags can be read from great distances
Can be combined with barcode technology

14. RFID’s Disadvantages Passive Store data on a tag Can be hidden
wireless
Store data on a tag
Can be hidden
Work in harsh environments
Ethical questions
Lack of standards!
Short range
Cost

15. RFID Summary Strengths Weaknesses Opportunities Threats
Advanced technology
Easy to use
High memory capacity
Small size
Weaknesses
Lack of industry and application standards
High cost per unit and high RFID system integration costs
Weak market understanding of the benefits of RFID technology
Opportunities
Could replace the bar code
End-user demand for RFID systems is increasing
Huge market potential in many businesses
Threats
Ethical threats concerning privacy life
Highly fragmented competitive environment