RFID Tag Information

RFID Tag Information

RFID tags are small electronic devices that store a large amount of information. They are able to communicate with readers by using magnetic coupling between loop antennas on both the tag and reader.

The Auto-ID Lab at MIT has been working on a way to turn passive RFID tags into sensors. They have developed an ultra-high-frequency, or UHF, tag that can detect spikes in glucose.


The cost of RFID Tags varies depending on the type of reader used and the read range required. For example, handheld readers can vary in price from $500 to $3,000 or more depending on the functionality and features they offer. The most expensive component of any RFID system is the reader itself. The antennas are also a factor in the overall cost of the RFID reader.

How RFID tags work is straightforward: the reader transmits a signal that the RFID tags pick up. They then communicate with the reader in a wireless way using radio frequency (RF) signals, which can be sent through walls or even water. The reader’s antennas convert the RF signals into electrical ones, and then back again, to send data to the RFID tags.

These devices are ideal for a variety of applications, including inventory management and asset tracking; tracking shipments; event or crowd control; RFID Tag and even access control in buildings. They provide fast, accurate data and help businesses to automate their processes. This saves labor costs and increases productivity.

These tags are also great for tracking expensive assets and items, such as medicines. They can be stored in a controlled temperature environment so they can stay effective for longer. Keeping track of these items manually can be difficult, but RFID tags make it easy. They can be tracked in real time, and staff can be alerted when their stock is low.


For RFID systems to work properly, the tags must be within range of a reader that is capable of picking up the tag’s signals. The tag and the reader must also use the same radio frequency and, if there is encryption, share the right keys.

To help people get started with RFID technology, most readers offer development kits that include the reader and recommended antenna plus sample RFID tags to test. These are great for determining whether or not the technology is a good fit for an operation.

In stores, RFID can help with three primary tasks: loss prevention, inventory management, and return processing. In the case of loss prevention, RFID tags can be placed on items that are automatically recorded when they are scanned at checkout. This makes it easier for staff to track stock and identify missing items. In terms of inventory, RFID can be used to keep track of the location of items and monitor supply and demand. In the case of returns, RFID tags can be used to record when an item is removed from a package and how it is returned.

Another reason why RFID is becoming more popular is its ability to track moving assets at a distance. While passive tags are fine for tracking static products, active RFID is a better solution for high-value moving assets.


Despite the many security measures taken, RFID Tags are not impervious to hacking. They can be vulnerable to a number of attacks such as basic cloning and spoofing. Cloning involves duplicating the data stored in a tag and spoofing is when a fake tag is used to gain access to a secure area or item. This is particularly important in applications where security and privacy are of paramount importance such as vehicle access control.

Like any electronic device, an RFID tag has an integrated circuit and an antenna. When the circuit is energized by radio waves at a specific frequency, it creates an electrical current that activates the chip within the tag and sends a signal to the reader. The signal is then decoded by the reader and the appropriate information is returned to the application. mifare desfire ev1 RFID is one of the most widely deployed anti theft technologies in retail stores and other commercial spaces.

When evaluating RFID solutions, be sure to consider all of the security features offered. This includes the capabilities of the reader as well as the backend systems that process and, in some cases, transmit the data to the cloud. For example, the RAIN RFID industry has been monitoring potential security threats for years and offers a variety of features such as Impinj QT technology and Protected Mode to address these concerns.


The applications for RFID tags are endless, but the most common ones include: asset tagging, warehouse management (case and pallet tagging), inventory tracking, work-in-process labeling, production tagging, and security tagging. These tags are also used to improve supply chain efficiency, reduce management time, and decrease operational costs.

In addition to improving productivity and decreasing labor costs, RFID tags can provide greater accuracy and reliability in a number of business operations. For instance, they allow employees to identify and scan multiple items at the same time, without requiring line-of-sight between the scanner and each individual item. This means that one employee could inventory an entire room full of assets in a matter of minutes. Furthermore, some RFID tags have onboard memory that can store important information about maintenance activities or sensor data that can be accessed by a field technician using a mobile computer.

Passive tags are inexpensive and can be applied manually or with an automated system to a wide variety of products. They use the energy reflected by the reader to power on their ICs and send a response to the reader. Compared to passive tags, active tags are more expensive and contain a microchip, radio transceiver, antenna, and battery. They are more complex and have a longer read range than passive tags, but they are less sensitive to moisture.