What is an RFID Tag?

What is an RFID Tag?

RFID tags have a unique identification number that enables tracking of items. They can also be programmed to provide other information. This information is stored on an integrated circuit (IC) chip.

The cost of RFID tags is very low and the technology has numerous benefits. Companies such as Avis Rent A Car use it to track vehicle returns and improve customer service.


An RFID tag is a microchip that stores data and communicates with an antenna/reader. It can be passive or active, and can transmit either radio waves or electricity. When an RFID tag receives a signal from the reader, it activates and modulates that energy with its own information. Then it transmits a response back to the antenna/reader that includes its unique ID.

RFID tags can be used in a variety of applications, including inventory management, access control, and animal tracking. They are often incorporated into items such as medical equipment, tools and vehicles to track their location and usage. They can also be used in contactless payment systems, such as transit fare payments or electronic toll collection.

Although the benefits of using RFID are numerous, there are some concerns about privacy. These issues include the ability of retailers and hackers to identify people at a distance without their knowledge, as well as the potential for sensitive personal data to be acquired without consent. These concerns are particularly significant when RFID tags are used in conjunction with a credit card or loyalty card, or when the tag is placed on a person’s body. However, these issues can be addressed by using a clipped tag, which removes the chip from an item after it is purchased. This can help to protect a purchaser’s privacy while still allowing the item to be tracked and returned for repair or replacement.


Whether it’s tracking inventory or people, RFID (radio-frequency identification) is an invisible technology with a wide range of applications. It’s already omnipresent in our lives, from ticketed events to prepaid transport passes and vehicle access controls.

One key application is tracking product location in warehouses or distribution centers. The technology allows retailers to lower cycle count times and automate reorders at safety stock levels. It also improves accuracy compared to manual spot checks. In addition, RFID Tag it enables manufacturers to identify product variants and track their movement in the supply chain, which can help them reduce costs.

Unlike barcodes, RFID tags have no power source of their own. Instead, they use electromagnetic energy from the RFID reader to power the IC in the tag. The IC then sends back a signal, and the RFID reader interprets the data into usable information. RFID readers may be fixed or mobile. The latter are often handheld or mounted on carts and vehicles.

Retailers are also using RFID to offer buy online, pickup in-store services. For example, a 2021 survey found that 56% of shoppers used click-and-collect services six or more times in the previous year. This feature helps retailers attract customers and bridge the gap between online and in-store shopping. It’s also useful for reducing order fulfillment time and increasing customer satisfaction.


RFID (radio-frequency identification) tags are tiny microchips that act as smart signatures. They’re often slapped on products like milk cartons or jacket collars, acting as an electronic code that transmits the product’s information to a reader. The tag’s data can then be retrieved and processed by a computer.

These chips are made up of a basic integrated circuit and antenna. When the IC comes into contact with radio waves at a certain frequency, they create an electric field that powers the chip. The IC contains the logic unit and memory to store data. It also provides the energy needed to operate the system – either from a small battery (in active tags) or through radio energy emitted by the interrogator antenna (in passive tags).

Some of these chips have a special feature that allows them to monitor chemicals in their environment. MIT researchers have developed a sticker-like RFID chip that can detect and communicate with chemicals, enabling continuous and low-cost monitoring.

To use these systems, companies need RFID readers, which can read the signals sent by a given tag. These readers may be stationary or mobile. The information that is gathered can be logged in a computer program, or it can be transmitted over a wireless communications interface to a host computer system for processing and reporting. Some systems can even track the location of tagged items in real time.


The cost of RFID technology varies widely depending on the type of solution required and its level of automation. A typical RFID system has up-front fixed costs and recurring fees that need to mifare desfire ev1 be taken into account before making a decision to implement an RFID system. It is important to understand the costs of each type of RFID system and how much an RFID implementation will save a business in order to determine if it is worth the investment.

The most common way that RFID systems are used is to track inventory, and there are two types of RFID tags: passive and active. Passive RFID tags are powered by a strong electromagnetic field and transmit a coded signal to the reader. These are typically the most inexpensive, and they can be placed on items of varying sizes, materials, and temperatures.

Active RFID tags emit their own signal and have a greater read range than passive tags, which makes them the ideal choice for real-time tracking applications. However, the cost of these tags is also higher.

In addition to the costs of RFID tags, a company will need to invest in RFID scanners and software. Handheld RFID readers are available at an average price of around $1,000, while fixed readers range in price from $2,000 to $8,000. AssetPulse offers a selection of RFID scanners and a variety of antenna optimized for each use case.