What are RFID Tags? How RFID Tags Work? Where are rfid tags used ?

nick

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Table of Contents:
1.What are RFID Tags?
2.How RFID Tags Work?
3.What Do RFID Tags Cost?
4.Are RFID Tags Safe?
5.RFID History
6.Where are RFID Tags Used and Who Uses Them?

What are RFID Tags?
RFID is short for “radio frequency identification” and refers to a technology whereby digital data encoded in RFID tags or smart labels are captured by a reader via radio waves.

RFID Tags are small objects that contain a chip and an antenna,it’s an electronic tag that exchanges data with a RFID reader through radio waves.These radio waves transmit data from the tag to a reader, which then transmits the information to an RFID computer program, it can be used to track anything of the objects they are attached to (or embedded in) with the help of an RFID reader,such as tracking vehicles, pets and merchandise.



How RFID Tags Work?
Most RFID tags are made up of at least two main parts.The first is an an antenna, which receives radio frequency (RF) waves. The second is an integrated circuit (IC), also called a microchip, the microchip on an RFID reader is written with whatever information the user wants.

There are two main types of RFID tags: active and passive.
Active RFID tags contain an onboard battery as a power supply, whereas a passive RFID tag does not, instead working by using electromagnetic energy transmitted from an RFID reader, it’s powered by a stationary or mobile RFID reader that emits an electromagnetic field. For more information about active tag and passive tag, read our the difference between active and passive.

For passive tags, there are low-, high- and ultra-high frequencies standardized (LF, HF, UHF).When a passive RFID tag is scanned by a reader, the reader transmits energy to the tag which powers it enough for the chip and antenna to relay information back to the reader. The reader then transmits this information back to an RFID computer program for interpretation. There are two main types of passive RFID tags: inlays and hard tags. Inlays are typically quite thin and can be stuck on various materials, whereas hard tags are just as the name suggests, made of a hard, durable material such as plastic or metal.

Active RFID tags use a battery to broadcast via BLE (Bluetooth Low Energy) or WiFi. Active RFID tags use one of two main frequencies — either 433 MHz or 915 MHz — to transmit information. They contain three main parts, including a tag, antenna, and interrogator. There are two main kinds of active RFID tags: beacons and transponders. Beacons send out an information ping every few seconds, and their signal is readable from several hundreds of feet away. Because they are sending out data so frequently, their battery tends to deplete quicker. Like passive RFID tags, transponders require the use of a reader to transmit information. When within range of one another, a reader first sends out a signal to the transponder, which then pings back with the relevant information. Because they only activate when near a reader, transponders are much more battery-efficient than beacons.
 
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