What is RFID?

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RFID basics

 RFID(Radio Frequency Identification)is  a general word to mean the type of automatic identification system to exchange ID information through radio wave.  For your better understanding, we take some examples around us in our daily life.  The most common and well-known identification system above all, needless to say, is “barcode”.  When you scan a barcode on a product at a cashier desk or warehouse, regardless of the objectives, products or stocks, you will get the information and ID in just a second. 
 Another example is “QR code”. This system helps you to get a direct access to information on the website like by scanning the code with an optical device such as smartphone camera. These systems both help us recognize the information automatically with the help of system.  Likewise, RFID helps us recognize all the things around us with the help of more advanced system.

¶RFID is a type of identification system


So what is the difference between RFID and barcode and QR code? If you compare the two different identification systems, the technical aspects of RFID will be much clearer. Let us check the following items one by one to learn RFID. 
¶There are a lot of advantages made possible by radio wave technology.


The following components are essential for the RFID system.

-Small tags called “RFID Tags” consisting of IC chip (integrated circuits) and antenna.

-RFID reader/writer (usually pre-set to meet geological regional wavelength)

-System (Computer, network, etc.)

-This reader emits radio wave and the antenna installed in the tag catches and throws back the wave with certain signal to convey information. Through this reaction, the reader and RF tag can communicate with each other.

Understand the difference

Barcode and QR code are automatic recognition technology which we see everywhere. RFID  makes the identification system more convenient and multi-functional, thanks to the electronics technology behind it.  We are talking about the differences between barcode, QR codes and RFID.

Various types of identification system

Readable at once

 When you see how barcode and QR code actually work in a supermarket,  you will see the cherkers have to scan the information on each product one by one at a readable distance. With RFID, on the other hand, you can scan the information of hundreds of RF tags in one second with just a single click, as long as RF tags are in readable range. This leads to more efficient operation and optimization of cycle operation time.

Can read stacked or blind tags

Any barcodes or QR codes must be exposed. Smudges, labels or any other objects covering the surface of codes prevent the scanning process. RFID tags on the other hand can be read even when they are located inside a box, behind an object or out of your reach. This characteristics enables you to read the tags in a pile of boxes from a distance.



Barcode and QR code have only the non-rewritable information which is written at the time of printing. On the other hand RF tags have memories which are revisable, writable and rewritable. RFID tags are used for a new applications  like recording timeline and managing traceability or history during production, storage and transportation.

¶RFID system has more advantages and functions compared with barcode


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