About RFID :RFID is an auto identification technology which is used for tracking items with a tag on it which sends data to readers through radio waves. These tags makes the item to speak about its identity, activity, location and data stored inside through readers and finally to the application software to make the information useful.

Components of RFID System:Tags:
The tag is made up of a microchip with the unique identification number and the antenna to be able to transmit this data to the reader wirelessly. RFID tags have high data capacity and can include manufacturer, batch no., ownership, destination, history etc. depending on the application needs. The amount of storage available on the tag ranges from 16 bits to as high as several thousand bits. There are three types of encoding available in tags i.e. Read only, write once, and re-writable tags.

Active and Passive tagsPassive tags are battery less and transmit data only when energized by the reader. Active tags are able to transmit data using their own battery power. Read ranges are more for active tags than for passive tags but are costlier for their extra capability. Therefore active tags are used for high value items and for longer reading distance.

Advantages

	No line of sight
	Contact less
	Improves read range
	Ability to write Data
	HIgh Data storage capacity
	Can read multiple Item
	Suitable for harsh environment
	No human intervention