What is RFID?

What is RFID? It's a type of wireless technology that lets you identify objects that have been fitted with special RF identification tags.

This can help you manage materials or assets easily, improve productivity, eliminate errors and stock-outs, and significantly reduce labor costs.

RFID is Radio FrequencyIDentification. The Radio Frequency refers to the electromagnetic energy that we transmit for the sole purpose of electronically carrying the IDinformation from an RFID tag to its reader.

Here we'll explain what you can use it for, expand the definition and explain how RFID technology works. We'll also provide links to other pages that will tell you about its benefits, disadvantages and limits, and discuss the things that impose those limits.

What is RFID good for?

For asset management RFID is currently the best practical way to track items in transit.

With RFID tracking, the benefits increase when you want to move items from country to country and they need to be off-loaded and re-loaded often.

RFID and logistics providers are excellent partners, especially when the location of the items can be continuously monitored by wireless telemetry.

RFID medical applications such as providing patients with an RFID wristband that contains the patient’s identity and other information relating to the patient’s medical condition. RFID hospital applications include tracking and recording of drugs and samples.

RFID in libraries. When books are fitted with RFID tags, piles or rows of books on a shelf can be quickly scanned without having to move or re-arrange them.

RFID access control at places where security is important, such as banks and airports. Putting RFID chips in passports is becoming common.

Animal identification. RFID for cattle using RFID ear tags or an RFID implant, a legal requirement, in some countries, to register a dog.

Fast payment of road tolls and other services that require fast throughput. RFID smart cards allow very fast identification and exchange of other information.

Timing competitors in large sports events. Events such as marathons require accurate identification and timing information for each competitor… especially if three cross the finishing line 1/10th of a second apart.

RFID seals are becoming a popular way to indicate if a container of manufactured items was opened.

Inventory control in supply chain management and retailing.

There are many, many applications for RFID and the list of applications above will help to answer the question what is RFID.

However, RFID isn’t necessarily always the right, or only choice. While RFID technology may bring huge financial benefits to a large operation, for a smaller one, the setup costs might swamp any benefits and a cheaper technology such as bar coding may be more appropriate.

When considering the question what is RFID, you should also consider the pros and cons. The advantages of RFID often outweigh the disadvantages.

A large RFID system may comprise a network of readers spread over a wide area. 

These RFID readers might push theiridentified item data to a special computer (a server) for processing into useful information that can be sent to, and used by the company’s enterprise management system.

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