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Is an automatic identification method using radio waves.
Controller
Host and Software System
Communication Infrastructure
Tag
Reader
Reader Antenna
An RFID tag is a device that can store and transmit data to a reader in a contactless manner using radio waves.
RFID tags can be classified in two different ways.
Passive
No on-board power source (for example, a battery)
Uses the power emitted from the reader to energize itself and transmit its stored data to the reader
Reader always communicates first, followed by the tag.
An RFID tag is a device that can store and transmit data to a reader in a contactless manner using radio waves.
RFID tags can be classified in three different ways.
Passive
Active
Has on-board power source (for example, a battery; other sources of power, such as solar, are also possible)
An RFID reader can read from and write data to compatible RFID tags.
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A radio device called a tag is attached to the object that needs to be identified.
When this tagged object is presented in front of a suitable RFID reader, the tag transmits his data to the reader (via the reader antenna).
The reader then reads the data and has the capability to forward it over suitable communication channels.
This application can then use this unique data to identify the object presented to the reader.
It can then perform a variety of actions.
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