What Is An RFID Tag?

What Is An RFID Tag?

An RFID Tag is an electronic device that exchanges data with a reader using radio waves. It consists of an antenna that receives radio waves and an integrated circuit that stores data and modulates/demodulates the signals sent to/from the antenna.

RFID tags enable hospitals to monitor supplies and equipment at remote testing sites. They also help improve efficiency and accountability for care teams.


Traceability is an important issue for the food industry, as it RFID Tag allows consumers to see exactly where and when their products were made. This is especially important in today’s global supply chain where food is shipped from all over the world.

Tracing products with RFID technology can make the difference between a product recall and a full-blown crisis. It can also save companies money by avoiding unnecessary stocking issues and improving security in their stores. RFID tags can even track a product throughout the supply chain, making it easier to identify potential problems early.

There are several different types of RFID tags and readers, but the most important factor in selecting the right one is assessing the environment where it will be used. A reader is like the brain of the system, sending a signal to an antenna to emit radio frequency waves. The tag responds to these waves by storing data on its chip, which can then be sent to a computer. There are a variety of reader formats, from fixed to mobile. Some readers are portable and can be carried around, while others are installed in a specific place to receive data from the RFID tags.

Other important factors include the read range and type of data to be captured. For example, if you’re tracking production materials on the shop floor, you’ll need to know the location of each item and its condition. This information will help you develop the best production process and improve the reliability of real-time visibility and traceability.


RFID technology provides many benefits in a variety of use cases. However, security concerns have been raised over privacy issues as well as the ability of unauthorized readers to access personal data without consent. These concerns have led to standard specifications development and the design of countermeasures that can help prevent these risks. For example, some tags provide features that protect the integrity of the data and ensure reader collision prevention. These features are designed to limit the scope of a reader’s access by restricting the amount of data it receives from the tag.

RFID is most commonly used in warehouses and retail stores to track inventory, but it’s also found on passports, credit cards and airline boarding passes. Criminals can use short-distance scanners to “skim” these items to download the information they contain, such as names, dates of birth, credit card numbers and expiration dates. This information can be used to commit identity theft and other crimes.

To prevent these attacks, people can take steps to keep their RFID tags / fobs / cards secure and away from public areas. If they have to carry them in a public area (like out for lunch), they can wear a sleeve that blocks RFID signals. They can also encourage their employer or landlord to invest in higher-security reader systems, even if this incurs an additional cost.


The ability to track inventory in real time using RFID has led to increased productivity. Companies can eliminate unnecessary paperwork and reduce the number of products that must be returned due to defects or other issues. This can also help prevent theft and improve employee performance. RFID can track items from the storeroom to the sales floor. This saves money for retailers by minimizing out-of-stock situations and improving customer experience. In addition, it helps retailers keep track of their merchandise to avoid overstocking.

The cost of RFID is lower than barcode scanners, and the technology allows users to scan multiple items simultaneously. In addition, RFID readers can read tags at greater distances than traditional barcode scanners. This can be especially useful when working with large items, such as furniture or equipment. The system can also prevent erroneous data entry and transcription errors, which are common in manual data collection methods.

The RFID chip’s memory can be used to record data on individual items or entire pallets of goods. This data can then be uploaded to an ERP or financial management system. This process can eliminate a significant amount of time spent on data entry and prevent costly mistakes, such as transcribing information incorrectly or missing items. RFID systems can also eliminate manual data collection at critical points, such as on a production line.


The cost of RFID depends on many factors, including whether it is passive or active, what type of memory and substrate it has, as well as the packaging of the tag. A basic passive 96-bit EPC inlay costs from 7 to 15 US cents, while a tag with extra-long battery life or special protective housing can run $25 per tag and up.

Passive tags can also be encapsulated in plastic for applications that require them to be resistant to chemicals and liquids. UHF passive RFID is commonly used for inventory tracking in retail environments and for keeping track of expensive IT equipment like server racks in a data center.

A passive RFID system requires no power, but it must be within a few feet of an interrogator to respond. The interrogator transmits a radio signal to the tags, which transmit back a unique identification number. The tags are then linked to the associated asset in a database. mifare desfire ev1 When the asset moves or changes location, the system will notify users via email or alerts.

RFID systems can save businesses money by reducing manual processes and improving efficiency. Unlike barcodes, RFID tags can be read at longer distances and are more resistant to interference from metal and liquid. In addition, RFID tags can be encapsulated in a plastic or paper label, making them less vulnerable to tampering.