RFID tags are smart labels that use radio frequency to identify, track and communicate with items and people. Each tag can store information such as a serial number or a short description, and a reader picks it up by radio with no line of sight. Identiv offers RFID tags, inlays, labels and access cards for many uses.
We live in a world of connected devices where Radio Frequency Identification (RFID) tags are a foundational technology shaping various industries. From supply chain efficiency to inventory management and even patient tracking in healthcare, RFID tags have become an integral part of daily life. As the Internet of Things (IoT) expands, the potential for RFID technology is only growing.
In this post, we’ll dive deeper into how RFID tags work, explore their different types, and highlight why they are key to IoT innovation across industries.
What Are RFID Tags and How Do They Work?
At its core, an RFID tag is a tracking system that uses radio waves to communicate information between a tag and a reader. These smart labels can store a wide range of data, including serial numbers, descriptions, and authentication details. Some RFID tags even come equipped with cryptographic security features for enhanced verification and authentication, making them essential for industries that demand data security and supply chain transparency.
RFID tags are generally categorized by their operating frequency:
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Low Frequency (LF): Operates between 30 – 300 KHz with a read range up to 10 cm. Often used in access control and livestock monitoring.
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High Frequency (HF): Operates at 13.56 MHz, with read ranges up to 6 cm. Widely used in electronic payments, ticketing, and user experience applications.
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Ultra-High Frequency (UHF): Operates between 860 MHz – 950 MHz, with read ranges up to 12 meters, commonly seen in retail inventory tracking, parking access, and asset management.
Passive vs. Active RFID Tags: What’s the Difference?
RFID tags come in two primary types: passive and active.
Passive RFID Tags
Passive RFID tags are the most commonly used and do not require a direct line of sight to function, though they offer a shorter read range. Lightweight, compact, and affordable, passive RFID tags are perfect for:
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Supply chain and inventory management
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Asset tracking and personnel tracking
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Industrial applications
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Brand protection and anti-counterfeiting
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Access control systems
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Pharmaceutical and healthcare solutions
Active RFID Tags
Active RFID tags, on the other hand, have their own transmitter and power source, making them more robust but also bulkier and more expensive. These are ideal for real-time location systems (RTLS), medical monitoring, and environments that require continuous data transmission. Examples include beacons for RTLS and theme park attendance monitoring.
NFC Technology: An Essential Subset of RFID
A specialized form of RFID technology is Near Field Communication (NFC), which operates under high frequency (HF) and allows for two-way communication between devices. NFC is increasingly used in IoT ecosystems to enable secure, contactless transactions and interactions between smart devices. From smart packaging to contactless payments, NFC offers limitless potential in connecting everyday objects in a secure, seamless manner.
What Are RFID Tags and How Are They Used?
Consider the label on a bottle of alcohol at the store meant to discourage stealing, or the small device or sticker on a car windshield that allows fine-free toll road use: those are all RFID tags. While most RFID tags are used for merchandise or to track packages, they can also be used to help track pets or patients in hospital settings.
Passive RFID tags are ideal for:
- Supply chain and inventory management
- Asset and personnel tracking
- Logistics
- Industrial and manufacturing
- Brand protection and anti-counterfeiting
- Real-time location systems (RTLS) using 3D orientation insensitive design
- Gate and perimeter access control
- Pharmaceutical and healthcare
- Entertainment and travel
- Apparel and retail
Active RFID tags are less common and require their own transmitter and power source. These tags tend to be bulkier, rugged, durable and more expensive. An example of an active RFID tag is a beacon used for RTLS, constant medical monitoring or theme park attendance.
How Industries Are Leveraging RFID and NFC Technologies
Today, industries ranging from healthcare to retail are adopting RFID and NFC solutions to improve efficiency, safety, and customer experiences. Here’s how:
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Healthcare uses RFID for tracking patients and medications, improving patient safety and enhancing operational efficiency.
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Retailers leverage UHF RFID tags to manage inventory more accurately, reducing theft, and offering better customer experiences.
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Logistics companies use RFID tags for real-time tracking, helping improve supply chain transparency and minimizing errors.
Identiv’s RFID Tag Portfolio: Innovation Meets Sustainability
At Identiv, we are constantly evolving our portfolio to meet the diverse needs of industries worldwide. Our wide range of RFID products includes inlays, tamper labels, and eco-friendly solutions. We are particularly proud of our Eco-Friendly RFID Tags, which have the industry’s lowest carbon footprint — demonstrating our commitment to sustainability.
RFID Tags FAQ
RFID tags are smart labels that use radio frequency to identify, track and communicate with items and people. They can store a range of information, from serial numbers to a short description and even pages of data.
Most RFID tags are used for merchandise or to track packages, and they can also help track pets or patients in hospital settings. Passive RFID tags are used for supply chain and inventory management, asset and personnel tracking, logistics, access control, pharmaceutical and healthcare, and apparel and retail, among other applications.
Passive RFID tags are the most common and do not require a direct line of sight to a reader. Active RFID tags are less common; they require their own transmitter and power source and tend to be bulkier, rugged, durable and more expensive.
Near field communication (NFC) is a subset of HF RFID technology. Most mobile devices are now NFC enabled, so it typically does not require any additional infrastructure to adopt.
Identiv’s RFID portfolio includes physical access cards, inlays, tags, labels and touchless solutions, including Eco-Friendly RFID Tags. Adding tamper functionality can transform an RFID tag into a smart seal.
Contact the Identiv team at transponder_sales@identiv.com or +1 888-809-8880.
Build Your Custom RFID Solution with Identiv
Ready to transform your business with custom RFID solutions? Whether you’re looking for smart seals, tamper-proof labels, or specialized tracking systems, Identiv offers tailored RFID solutions to suit any application.