September 29, 2016

What Is RFID and How RFID Works ?


What is RFID?

RFID is an acronym for radio-frequency identification and refers to a technology whereby digital data encoded in RFID tags or smart labels (defined below) are captured by a reader via radio waves. RFID is similar to barcoding in that data from a tag or label are captured by a device that stores the data in a database. RFID, however, has several advantages over systems that use a barcode asset tracking software. The most notable is that RFID tag data can be read outside the line-of-sight, whereas barcodes must be aligned with an optical scanner.

How RFID Works?

RFID belongs to a group of technologies referred to as Automatic Identification and Data Capture (AIDC). AIDC methods automatically identify objects, collect data about them, and enter those data directly into computer systems with little or no human intervention.

RFID methods utilize radio waves to accomplish this. How RFID Works? RFID systems consist of three components: an CXJ RFID tag or smart label, an RFID reader, and an antenna.
RFID tags contain an integrated circuit and an antenna, which are used to transmit data to the RFID reader (also called an interrogator). The reader then converts the radio waves to a more usable form of data. Information collected from the tags is then transferred through a communications interface to a host computer system, where the data can be stored in a database and analyzed at a later time.

The Use of Rfid Technology Is Most Notable in the Following Industries
– Inventory management
– Asset tracking
– Personnel tracking
– Controlling access to restricted areas
– ID Badging
– Supply chain management
– Counterfeit prevention (e.g. in the pharmaceutical industry)

RFID Tags and Smart Labels

As stated above, an RFID tag consists of an integrated circuit and an antenna. At a simple level, The tag is also composed of a protective material that holds the pieces together and shields them from various environmental conditions. And the RFID is a very part of how RFID works, RFID tags come in a variety of shapes and sizes and are either passive or active. Passive tags are the most widely used, as they are smaller and less expensive to implement. Passive tags must be powered up by the RFID reader before they can transmit data. Unlike passive tags, active RFID tags have an on-board power supply, thereby enabling them to transmit data at all times.

Smart labels differ from RFID tags in that they incorporate both RFID and barcode technologies. They’re made of an adhesive label embedded with RFID inlays, and they may also feature a barcode and/or other printed information. Smart labels can be encoded and printed on-demand using desktop label printers, whereas programming RFID tags is more time consuming and requires more advanced equipment.


The above is the basic introduction of “What Is RFID And How RFID Works?“, if you want to know more about the application scenarios of RFID or you need solutions about RFID, please feel free to contact us.

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