What Is RFID – Radio Frequency Identification?

RFID is an acronym for frequency Identification – the utilization of wireless communications to determine the identity of a object . RFID term is employed to explain a system that transmits the identity (in the shape of a singular serial number – EPC – Electronic Product Code) of an object wirelessly, using radio waves. RFID technology provides wireless identification of individuals , books or assets. A RFID tag is attached to an object and contains information that object.

RFID Components:

A typical RFID system is made up of three components: Tags (RFID ID Cards), Readers and the host computer system.

Tag(RFID ID Cards):

Tag is formed from an integrated antenna and memory. the knowledge are often written and rewritten on Tag memory. The unique ID written on Tag while manufacturing is understood because the EPC (Electronic Product Code). This Tag is enclosed during a Rectangular Plastic Card of the dimensions of Bank Debit / mastercard .

RFID Cards
RFID Cards
RFID Cards


An RFID reader may be a device that’s wont to read RFID tag data. The reader has an antenna that emits radio waves; the tag responds by sending back data stored in it to Reader.

RFID reader
RFID reader

Host Computer:

It reads/writes data from / to the tags through the reader. It stores and evaluates obtained data and links the transceiver to applications.

Features And Benefits Of RFID Over Barcodes

  • No line of slight is required to read a RFID card / tag.

  • So no need of Oriented reading like Universal Product Code.

  • Multiple RFID Cards are often read.

  • No human error like Universal Product Code reading while reading a card. Are often read in any orientation.

  • Re-usable for other purpose.

Different Types Of RFID

There are several versions of RFID that operate at different radio frequencies. the selection of frequency depends on the business requirements and skim environment. Three primary frequency bands are getting used for RFID:

  • Low Frequency (125/134KHz) – most ordinarily used for Attendance & access control.

  • High- Frequency(13.56 MHz) – Used where medium rate and skim ranges up to about 1.5 meters are acceptable. This frequency also has the advantage of not being vulnerable to interference from the presence of water or metals.

  • Ultra-High-Frequency(850 MHz to 950 MHz) – offer the longest read ranges of up to approximately 3 meters and high reading speeds.

  • Active RFID Tags are battery powered. They broadcast a sign to the reader and may transmit over the best distances (100+ meters). Typically they will cost Rs. 500 or more and are wont to track high value goods like vehicles and enormous containers of products . Shipboard containers are an honest example of a lively RFID tag application.

  • Passive RFIDTags don’t contain A battery . Instead, they draw their power from the radio emission transmitted by the reader. The reader transmits a coffee power radio wave through its antenna to the tag, which successively receives it through its own antenna to power the microcircuit (chip).

Network LF Readers With Biometric (Thumb) For Attendance

Features & technical sects. of network biometric RFID readers,

  • Read and write functions.

  • Compact size & Wall mountable.

  • User friendly interface.

  • Stores Data.

  • Finger prints images.

  • Attendance record 50,000 to 1,00,000 Record.

  • Remote & real time access & monitoring by Server Program.

  • Authentication media : Finger print / Password / RFID card / combination.

network biometric RFID readers