RFID tags carry information like a serial number and model number that is transmitted to a compatible reader when passed through its radio frequency field, identifying the object. There are three main types: active tags with batteries that communicate over several meters, semi-passive tags with batteries that only transmit in response to a reader signal, and passive tags that derive power from the reader field without an active transmitter. RFID finds common applications in areas like asset tracking, supply chain management, and vehicle identification/tolls where it provides benefits like enhanced customer satisfaction, improved efficiency, reduced costs and manpower compared to alternatives like barcodes. Future developments continue to expand its uses.

1. RFID
Tags
15226859 Tam Tsz Ying
26 February 2016

2. Contents

3. RFID
– RFID = Radio Frequency Identification
– Electronic labeling and wireless identification of objects using radio frequency
– Tag carries with its information
– a serial number
– Model number
– Color or any other imaginable data
– When these tags pass through a field generated by a compatible reader, they
transmit this information back to the reader, thereby identifying the object

4. Types of RFID tags
Active Tags
• Use a battery
• communicate over
distances of several
meters
Semi-passive Tags
• Contain built-in
batteries to power the
chip’s circuitry, resist
interference and
circumvent a lack of
power from the reader
signal due to long
distance.
• They are different from
active tags in that they
only transmit data at
the time a response is
received
Passive Tags
• Derive their power from
the field generated by
the reader
• without having an active
transmitter to transfer
the information stored

5. Frequency of RFID tags in different
applications
Frequency Appx. Read Range Data Speed Cost of
Tags
Application
Low Frequency (125kHz) <5cm
(passive)
Low High • Animal Identification
• Access Control
High Frequency (13.56
Mhz)
10 cm – 1m
(passive)
Low to Moderate Medium to
Low
• Smart Cards
• Payment (paywave)
Ultra High Frequency (433,
868-928 Mhz)
3m -7m
(passive)
Moderate to High Low • Logistics and Supply Chain
• Baggage Tracking
Microwave (2.45 & 5.8
Ghz)
10m -15m
(passive)
20m – 40m
(active)
High High • Electronic toll collection (Autotoll)
• Container Tracking

6. Current Applications
Application Segment Representative Applications Competitive Technologies Current Penetration Typical Tag Type
Access Control Doorway entry Other keyless entry technologies High Passive
Asset Tracking Locating tractors within a freight yard None Low Active
Asset Tagging Tracking corporate computing systems Bar Code Low Passive
Authentication Luxury goods counterfeit prevention Holograms Low Passive
Baggage Tracking Positive bag matching Bar Code, Optical Character Recognition Low Passive
POS Applications SpeedPass Credit Cards, Smart Cards, Wireless Phones Medium Passive
SCM (Container Level) Tracking containers in shipping terminals GPS-based Systems Low Active
SCM (Pallet Level) Tracking palletized shipments Bar Code Minimal Active, Passive
SCM (Item Level) Identifying individual items Bar Code Minimal Passive
Vehicle Identification Electronic toll collection Bar Code, License plate, reader systems Medium Active, Passive
Vehicle Immobilizers Automotive ignition systems Other theft prevention technologies High Passive

7. Survey results
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Enhanced customer satisfaction
Improved efficiency
Increased inventory turnover rate
Reduced manpower
Reduced total cost
Benefits of using RFID in different industries
Warehousing Transportation Retailing Manufacturing

9. video

10. Survey results

11. Future development