qué es rfid? Understanding Radio Frequency Identification and Its Practical Uses

qué es rfid? RFID, or Radio Frequency Identification, is a technology that uses radio waves to identify and exchange data with tagged objects. An RFID system typically includes tags, readers, and software. It helps businesses identify products, count inventory, track assets, and record item movements without scanning every label individually.

RFID is often introduced as a faster alternative to barcodes. That description is useful, but incomplete. The important difference is not simply reading speed. A barcode usually requires a scanner to see a printed code, while an RFID reader can communicate with compatible tags through radio waves. Depending on the tag type, frequency, antenna arrangement, and surrounding materials, it may identify several tagged items in one reading zone.

This changes how information is collected in a warehouse, retail store, factory, or library. Instead of asking an employee to locate and scan each individual label, a business can create a controlled reading point and capture tag information as goods pass through it.

The technology is not magic, however. A tag does not automatically provide an object’s live GPS position, and an RFID reader cannot reliably identify every tag in every environment. Good results depend on the relationship between the tag, reader, antenna, software, and physical operating conditions.

What Does RFID Stand For?

RFID stands for Radio Frequency Identification. It describes a method of identifying objects by using radio-frequency communication between a reader and an electronic tag.

The tag stores an identifier and, depending on its design, may contain additional information. When it enters a reader’s effective field, the reader sends a radio signal. A compatible tag responds, allowing the system to capture its stored data.

A typical RFID solution has three main layers:

• RFID tag: Attached to or embedded in an object. It contains a microchip and an antenna.
• RFID reader: Sends and receives radio signals to communicate with tags.
• Software or host system: Processes the collected identifiers and connects them with inventory, asset, production, or transaction records.

The reader does not necessarily know that a tag represents a carton of electronic components or a garment in a retail store. It receives an identifier. The business application then looks up the corresponding record in a database or management platform.

This distinction matters. RFID captures an identity; the connected information system gives that identity business meaning.

How Does RFID Work?

RFID works through radio-frequency communication between a reader and a tag. The exact communication process varies by frequency and tag design, but a passive UHF system provides a useful example because it is widely used in logistics, retail, and inventory management.

1. The reader creates a radio-frequency field

An RFID reader is connected to one or more antennas. When activated, it transmits a radio-frequency signal into a defined area.

The size and shape of that area depend on several factors:

• Reader output power
• Antenna gain and orientation
• Tag antenna design and sensitivity
• Operating frequency and regional regulations
• Distance and angle between reader and tag
• Nearby metal, liquids, and other sources of interference

A high-power reader does not guarantee reliable identification. If the antenna is poorly positioned or the tags are unsuitable for the objects they are attached to, increasing output power may create more stray reads rather than solve the problem.

2. The tag receives the signal

A passive RFID tag has no internal battery. It uses energy from the reader’s radio-frequency field to power its chip and respond.

The tag generally consists of:

• A microchip that stores and processes data
• An antenna that receives and transmits radio-frequency signals
• A substrate or housing that supports and protects the components

When the tag receives enough energy, its chip can respond according to the communication protocol supported by the system.

Active RFID tags work differently because they contain their own power source. Battery-assisted passive tags are another category: they use a battery to support the chip or sensing functions, while communication may still rely on a reader’s signal.

3. The reader receives the tag’s response

In a common passive UHF system, the tag communicates by changing or modulating the way it reflects the reader’s signal. This is known as backscatter communication.

The reader detects the response and decodes the information. If multiple tags are present, anti-collision procedures help the reader identify them without treating every response as one combined signal.

This is why RFID can be useful for reading groups of products. The system is designed to manage multiple tag responses, although the actual number of tags identified in a single pass depends on the reader, protocol settings, tag population, antenna configuration, and environment.

4. Software turns tag data into business information

After reading a tag, the reader sends the captured data to a connected computer, controller, or application.

For example, a warehouse system may associate an EPC with:

• Product description
• SKU
• Batch or lot number
• Purchase order
• Storage location
• Shipment or receiving record

The RFID reader captures the identifier. The warehouse management system determines what that identifier represents and what action should follow.

A useful implementation therefore needs more than successful radio communication. It also needs correct tag encoding, data mapping, event handling, and integration with the business application.

What Are the Main Types of RFID?

RFID systems are commonly classified by their operating frequency: Low Frequency (LF), High Frequency (HF), and Ultra-High Frequency (UHF). These categories differ in reading distance, communication characteristics, and typical applications.

The choice should be based on the object and operating process, not simply on which frequency offers the longest read range.

RFID frequency comparison

RFID frequency	Common frequency	Typical reading characteristics	Common applications
LF	125–134 kHz	Short range, often close to the reader	Animal identification, industrial identification, access applications
HF	13.56 MHz	Short to moderate range, depending on standard and antenna	Smart cards, library systems, NFC-related applications, ticketing
UHF	Approximately 860–960 MHz, depending on regional allocation	Several metres may be possible in suitable conditions	Retail inventory, warehouse operations, logistics, asset tracking

GS1 describes HF RFID as commonly operating at 13.56 MHz. Passive UHF, also known as RAIN RFID, operates in the 860–930 MHz range under the relevant GS1/EPC Gen2 system. GS1 notes that UHF reading distances can reach up to 10 metres depending on the environment. These are general technical characteristics, not guaranteed distances for every product or installation.

One detail is easy to overlook: UHF frequency allocations vary by country. A reader configured for one market may not be suitable for another. GS1 Japan, for example, documents the UHF frequency allocation used in Japan and highlights the need to check local radio regulations when deploying RFID equipment across borders.

LF RFID: identification at close range

LF RFID is often selected for applications where short-range identification is sufficient. It is used in areas such as animal identification and certain industrial or access-control systems.

Its relatively short reading distance can be useful when the system needs a clearly defined interaction point. A reader positioned near a tagged object can identify it without creating a large reading zone.

HF RFID: cards, documents, and item-level applications

HF RFID operates at 13.56 MHz and supports several established standards. It is widely used in contactless cards, ticketing, library applications, and other systems where a controlled reading interaction is appropriate.

NFC is also based on 13.56 MHz technology, although NFC and other HF RFID applications do not all use the same protocols or serve identical purposes. Compatibility must be checked at the standard and device level.

UHF RFID: inventory and logistics

UHF RFID is widely used when businesses need to identify many tagged objects over a larger reading area.

For example, a warehouse can install fixed readers near receiving or dispatch points. When tagged cartons pass through a configured reading zone, the system can capture their identifiers and compare them with expected shipment records.

UHF is also suitable for handheld inventory checks, retail stocktaking, and production-line identification. Its performance is strongly affected by antenna placement, tag orientation, the density of tagged objects, and the surrounding materials.

A UHF tag attached directly to a metal surface may behave very differently from the same tag attached to a cardboard carton. Metal can detune or shield an ordinary tag antenna, while water-rich materials can absorb or alter radio-frequency energy. Specialized on-metal tags and careful antenna positioning may be needed.

What Are the Different Types of RFID Tags?

RFID tags can be classified by their power source, physical construction, and intended application. Understanding these differences helps prevent a common purchasing mistake: selecting a tag based only on its frequency or price.

Passive RFID tags

Passive RFID tags do not have an internal battery for normal communication. They receive energy from the reader’s radio-frequency field and use backscatter to send information back.

They are commonly used for:

• Retail product labels
• Warehouse cartons and pallets
• Library books and media
• Reusable containers
• Industrial components
• Asset identification

Because passive tags do not need a battery, they can be made small and economical enough for item-level identification. Their actual performance still depends on tag design, the material they are attached to, and the reader system.

Active RFID tags

Active RFID tags contain their own power source, usually a battery, and use it to operate their electronic circuitry and transmit a signal.

They are generally used where longer communication distances or additional functionality justify their higher cost and larger physical size. Examples include certain vehicle, railway, and high-value asset tracking applications.

GS1 explains that active tags can have a much longer reading range than passive tags, while passive tags rely on energy supplied by the reader. The two categories therefore serve different operational needs rather than competing as interchangeable products.

Battery-assisted passive tags

Battery-assisted passive tags sit between the two categories. A battery supports the chip or sensor functions, but the tag may still communicate by backscattering a signal from the reader.

These tags can be useful when an application needs capabilities that a conventional passive tag cannot easily provide, such as certain sensor-related functions.

RFID tag formats

The same RFID technology can be packaged in very different physical forms.

RFID labels and inlays

Thin, lightweight formats commonly used on retail products, cartons, and shipping labels.

Hard tags and industrial tags

More durable housings for equipment, tools, returnable containers, and demanding environments.

Cards and key fobs

Commonly used for access control, identification, and contactless interactions.

Textile and laundry tags

Designed for attachment to garments, uniforms, and reusable textiles that undergo repeated handling.

A tag’s physical format is not a reliable indication of its frequency. A card, label, or hard tag may use different RFID technologies. Always confirm the frequency, protocol, memory configuration, and reader compatibility before ordering.

Where Is RFID Used in Business?

RFID is used wherever an organization needs to identify objects, record their movement, or verify that specific items are present. The most useful applications are usually connected to a defined business process rather than a standalone reading demonstration.

RFID in retail inventory management

Retailers use RFID labels to identify individual products and improve visibility across stores, stockrooms, and distribution operations.

A handheld reader can collect information from tagged products during a stock count. A fixed reader may be installed at a receiving point or another controlled location to capture product movement.

This can help staff identify discrepancies between recorded inventory and physical stock. It can also support replenishment decisions when the RFID data is integrated with the retailer’s inventory system.

There is published research behind this application. A study by Bill C. Hardgrave, John A. Aloysius, and Sandeep Goyal, published in Production and Operations Management in 2013, examined RFID-enabled inventory visibility in two retail field experiments.

The first experiment covered 13 stores over 23 weeks and reported an approximately 26% decrease in inventory record inaccuracy. The second expanded the research to 62 stores and five product categories. The researchers found that results varied by category, with improvements ranging from no statistically significant improvement to 81%. Sage Journals+1

The practical lesson is not that every RFID installation will improve inventory accuracy by 26%. The study shows that RFID can make a measurable difference under specific operating conditions. Product category, tagging coverage, data quality, and the way a retailer uses the captured information all matter.

RFID in warehouses and logistics

In a warehouse, RFID can support receiving, put-away, picking, packing, and dispatch operations.

For example, a business may attach UHF RFID labels to cartons or pallets. At goods receiving, a fixed reader can capture identifiers as tagged items pass through a designated zone. The warehouse management system can then compare the captured data with the expected purchase order.

This approach may reduce repetitive manual scanning, but it needs careful configuration. If tags from nearby storage locations are also read, the system may record items that have not actually crossed the receiving point. Antenna direction, shielding, reader power, and software filtering help define the intended reading zone.

RFID in manufacturing

Manufacturers can use RFID to identify work-in-process items, tools, fixtures, and reusable containers.

A tag can carry a unique identifier that links a component to its production record. When the item reaches a workstation, an RFID reader can capture its identity and allow the production system to retrieve the relevant process information.

The value is often found in reducing uncertainty: which component arrived, which batch it belongs to, and whether the expected item has reached the next operation.

RFID for libraries and asset management

Libraries use RFID to support circulation, returns, inventory checks, and self-service operations. The technology can help identify books and other media without requiring staff to scan each barcode individually.

Businesses also use RFID to manage tools, IT equipment, reusable transport items, and other assets. The tag identifies the asset; the connected system records its assigned location, status, or movement history.

RFID vs. Barcode: What Is the Difference?

RFID and barcodes both help businesses identify products and assets, but they collect information in different ways. A barcode scanner reads a printed visual pattern, while an RFID reader communicates with an electronic tag using radio waves.

This difference affects how each technology performs during stocktaking, receiving, and tracking operations.

Comparison	RFID	Barcode
Identification method	Radio-frequency communication	Optical scanning
Line of sight	Usually not required	Usually required
Multiple-item reading	Supported by suitable RFID systems	Generally scanned one code at a time
Data storage	Depends on tag chip and memory type	Usually encoded in the printed symbol
Reading distance	Depends on frequency, tag, and reader configuration	Depends on scanner and barcode quality
Physical durability	Can be protected inside a suitable tag or label	Printed code can become damaged or obscured
Typical costs	Tags and infrastructure can cost more	Labels and scanners are often less expensive
Common applications	Inventory visibility, logistics, asset tracking	Product identification, checkout, document tracking

When should a business choose RFID?

RFID is worth evaluating when the operation involves large quantities of items, frequent stock counts, reusable assets, or movement through controlled checkpoints.

Consider a distribution centre receiving hundreds of cartons. With barcode scanning, an employee generally needs to position the scanner so that each label can be read. A UHF RFID system may capture multiple tagged cartons as they pass through a configured reading area.

That does not mean RFID is automatically the better option. If a business handles a small number of products and scans them individually at a checkout counter, a barcode system may be simpler and more economical.

A practical decision should consider:

• Number of items handled per day
• Frequency of inventory checks
• Labour time spent on identification
• Required reading accuracy
• Tag and reader costs
• Integration with existing software
• Environmental conditions
• Expected return on investment

Some organizations use both technologies. A product may carry a barcode for conventional scanning and an RFID label for automated inventory identification. The two methods can serve different stages of the same supply chain.

What Are the Advantages of RFID?

RFID can improve how organizations collect and use identification data. Its benefits are most apparent when the technology is connected to a process that previously depended on repeated manual scanning or incomplete records.

1. Faster identification of multiple items

A suitable RFID reader can identify several tags within its reading zone. This is useful for stocktaking, carton verification, and tracking groups of tagged assets.

The actual reading performance depends on the tag population, protocol, reader capability, antenna configuration, and operating environment. A published maximum read rate should not be treated as a guaranteed result in a warehouse.

2. Reduced dependence on line-of-sight scanning

Unlike conventional barcodes, RFID tags do not normally need to be visually exposed to the reader. This can make identification easier when labels are inside cartons, attached to garments, or positioned in locations that are awkward to scan optically.

There are limits. Radio signals can be affected by metal, liquids, tag orientation, and interference. A tag hidden behind an unsuitable material may not be read reliably.

3. Better inventory visibility

When RFID events are integrated with inventory software, businesses can compare recorded stock with the items actually detected at a reading point.

For example, a receiving system can compare tag identifiers against an expected delivery list. If an expected tag is missing, the system can flag the discrepancy for investigation.

4. Improved asset identification

RFID tags can identify tools, containers, equipment, and other reusable assets. A business can associate each tag with an asset record and use reader events to support check-in, check-out, or movement records.

This is particularly useful when assets are shared between teams or locations.

5. More consistent data collection

A well-designed RFID installation can capture identification events at defined points in a workflow. This reduces reliance on employees remembering to scan every item manually.

However, automation does not eliminate the need for process controls. Incorrectly encoded tags, duplicate records, missed reads, and poorly configured software can still produce inaccurate information.

What Are the Limitations of RFID?

RFID is useful, but it is not a universal identification solution. Many problems attributed to the technology are actually caused by a mismatch between the tag, reader, installation, and application.

Metal and liquid interference

Metal surfaces can alter the behaviour of an RFID tag antenna. Liquids can absorb or affect radio-frequency energy, particularly in UHF applications.

For these environments, businesses may need specialized on-metal tags, suitable mounting positions, or antenna configurations designed for the application.

A standard low-cost label should not be assumed to work equally well on a metal machine, a bottle of liquid, and a cardboard carton.

Unwanted reads

A reader may detect tags outside the intended area. In a warehouse, this could mean reading inventory from a nearby shelf while the system is supposed to record only goods passing through a receiving point.

Common ways to manage this include:

• Adjusting reader output power.
• Changing antenna direction and mounting position.
• Using shielding where appropriate.
• Applying software filters and read-zone logic.
• Testing with actual tagged products and realistic movement patterns.

The goal is not simply to maximize the number of reads. It is to capture the correct tags at the correct moment.

Missed reads

A tag may not respond if it receives insufficient energy, is poorly oriented, is damaged, or is affected by nearby materials. Dense tag populations can also make reliable identification more challenging.

A useful troubleshooting process starts with a small test group. Confirm that each tag is compatible, correctly encoded, and readable at the intended position before expanding the installation.

Initial investment and integration

An RFID project may require tags, readers, antennas, cabling, mounting hardware, software development, and system integration. The total cost depends on the number of reading points and the complexity of the process.

For that reason, a pilot installation is often more useful than purchasing a large quantity of equipment immediately. It allows the business to measure actual performance under operating conditions.

How to Choose the Right RFID System

Choosing an RFID system begins with the business task, not the reader specification sheet.

A warehouse that needs to verify pallets at a loading bay has different requirements from a library that needs to identify books at a self-service station. Both may use RFID, but the tag format, frequency, antenna arrangement, and software are not necessarily interchangeable.

Step 1: Define the identification task

Write down exactly what the system needs to identify.

Examples include:

• Individual retail products
• Cartons and pallets
• Tools and industrial equipment
• Books and library materials
• Reusable transport containers
• Garments and laundry items

Also define where identification should happen: at a workstation, on a conveyor, at a doorway, or across a storage area.

Step 2: Select a compatible frequency and protocol

Check the tag and reader specifications together. For passive UHF applications, EPC Class 1 Gen 2 and ISO/IEC 18000-63 are widely used references.

The correct regional frequency configuration is also essential. A reader intended for one regulatory market should not be assumed to operate legally or correctly in another.

Step 3: Select the reader format

Fixed RFID reader

Suitable for automated reading points such as warehouse entrances, production stations, and conveyor systems. The reader can be connected to external antennas or use an integrated antenna, depending on the model.

Handheld RFID reader

Useful for mobile inventory checks, asset searches, shelf audits, and tasks where employees need to move between reading locations.

Desktop RFID reader-writer

Designed for workstation-based applications such as tag encoding, registration, testing, and small-scale item identification.

Step 4: Check tag suitability

A tag must be selected for the object and environment where it will be used.

For example:

Object or environment	Tag consideration
Cardboard cartons	Standard UHF label may be suitable
Metal tools or machinery	Consider an on-metal RFID tag
Garments	Lightweight textile or label format
Reusable plastic containers	Durable tag with suitable mounting
Books and documents	Tag format compatible with the library system
Laundry textiles	Washable tag designed for repeated laundering

Step 5: Test the complete reading zone

Do not evaluate a reader using only one tag placed directly in front of its antenna.

Test the actual products, tag positions, movement speeds, and expected item quantities. Include difficult cases: cartons stacked closely together, tags facing different directions, and objects positioned near metal structures.

Record both successful and unsuccessful reads. A system that reads every tag in a carefully arranged demonstration may perform differently during a busy shift.

Step 6: Confirm software and data integration

An RFID reader can successfully identify a tag without automatically updating the company’s inventory.

The reader must send the captured data to an application that understands the tag identifier and knows what action to take. Depending on the project, integration may involve a warehouse management system (WMS), enterprise resource planning (ERP) platform, manufacturing execution system (MES), library management software, or a custom application.

Before selecting equipment, confirm:

• Supported communication interfaces, such as USB, RS-232, or Ethernet.
• Available SDKs, APIs, and programming examples.
• Supported RFID protocols and tag memory operations.
• Whether the system supports filtering and duplicate-read handling.
• How reader events are transferred to the business application.
• Whether the supplier can support testing and integration.

How Is RFID Installed in a Real Business Environment?

An RFID installation should be designed around the movement of objects. The physical reading zone is just as important as the electronic specifications.

Consider a warehouse that wants to record cartons entering a receiving area. Installing a fixed reader above the doorway may seem straightforward, but the actual result depends on how cartons move through the entrance, how tags are attached, and whether nearby inventory can also be detected.

A more controlled installation usually follows several stages.

1. Map the movement of goods

Identify where items enter, leave, change location, or require verification. Mark the points where an RFID reading event should occur.

For a warehouse, these may include:

• Goods receiving
• Storage transfer
• Picking and packing
• Dispatch
• Return processing

Not every movement requires a reader. Start with the points where automatic identification can replace a repetitive manual task or reduce a specific operational risk.

2. Install and position the antennas

Antenna placement should match the direction and expected position of tagged objects.

For example, a portal reading zone may use antennas positioned on both sides of a passage. A workstation may need only one antenna positioned close to the item. A conveyor application may require a different arrangement to accommodate moving products.

The installation should be tested with real items rather than empty cartons or demonstration tags alone.

3. Configure reader parameters

Reader output power, antenna selection, session settings, frequency configuration, and tag filtering all influence performance.

Higher transmission power is not always better. It can increase the likelihood of detecting tags outside the intended area. The objective is a stable, predictable reading zone.

4. Connect the reader to the application

The application should associate tag identifiers with the correct product or asset records. It should also handle repeated reads, missing tags, and unexpected items.

For example, if a carton passes a receiving point several times during a test, the application should not automatically create several independent goods-receipt transactions. Reader data needs to be interpreted within the context of the workflow.

5. Run a pilot before full deployment

A pilot should include normal operations, not just ideal laboratory conditions.

Measure:

• Percentage of expected tags successfully identified
• Incorrect reads from outside the intended zone
• Duplicate events
• Reading performance at different tag orientations
• Behaviour with full and partially loaded cartons
• Time required to complete the target task
• Reliability of data transfer to the business system

These measurements help determine whether the system is ready to expand and where adjustments are necessary.

How Can Businesses Measure RFID Return on Investment?

RFID return on investment should be measured against a specific operational problem. Faster reading is only one possible benefit. Labour savings, fewer inventory discrepancies, improved asset availability, and more reliable receiving records may also contribute.

A simple calculation is:

For illustration, assume a business spends 20 labour hours per week on a recurring inventory task. After introducing RFID, the task requires 8 hours per week.

The potential time saving is:

This is an illustrative calculation, not a published RFID industry benchmark. It also does not mean the full 624 hours automatically become financial savings. The business must determine whether the released time reduces overtime, avoids additional labour, or allows employees to complete other productive tasks.

A more complete project evaluation should include:

Cost or benefit	What to measure
RFID tags	Cost per tagged item and annual tag volume
Readers and antennas	Equipment, installation, and maintenance
Software integration	Development, licensing, and support
Labour	Time spent on inventory and identification tasks
Inventory accuracy	Frequency and cost of stock discrepancies
Asset utilization	Lost equipment, idle assets, and search time
Process reliability	Receiving errors, dispatch errors, and manual rechecks

The most useful baseline is the current process. Record how long it takes, how often errors occur, and what those errors cost before introducing new equipment. Without that comparison, it is difficult to distinguish a genuine improvement from a more expensive way of performing the same task.

RFID Equipment Examples for Different Applications

The appropriate equipment depends on the reading environment and the required workflow. The following examples illustrate how different reader formats can support different RFID tasks.

Fixed UHF readers for automated identification

Industrial fixed readers are commonly used at warehouse entrances, production stations, and other locations where tagged objects pass through a defined reading area.

For example, Cykeo’s CYKEO-RA9L / CK-D9L product family is designed for industrial UHF RFID applications. The supplied product specifications describe an integrated 9 dBi antenna configuration, with RS-232 and Ethernet options, anti-collision functions, and support for ISO 18000-6C/6B. A 12 dBi variant is also available.

These specifications should be confirmed against the current product datasheet and the intended regional frequency configuration before publication or purchase.

Desktop RFID readers for tag registration and encoding

Desktop RFID reader-writers are suitable for workstation-based tasks, including tag encoding, registration, and testing.

The Cykeo SSD-D1AL is a desktop UHF RFID reader-writer specified with an Impinj R500 chip and a near-field antenna design. The supplied specifications state a maximum port output of 33 dBm, a reading distance of up to 30 cm, and a writing distance of up to 10 cm.

It also supports batch writing, tag filtering, and demonstration software, with C# and Java development materials.

These operating distances are product-specific stated limits, not guaranteed results for every tag or working environment. Actual performance should be verified with the tags and materials used in the application.

Frequently Asked Questions About qué es rfid

1. qué es rfid in simple terms?

RFID stands for Radio Frequency Identification. It is a technology that uses radio waves to identify electronic tags attached to products, assets, or other objects. An RFID reader communicates with the tag and captures its stored identifier, which connected software can use to retrieve related information.

2. How does RFID work without a barcode?

RFID uses radio-frequency communication rather than optical scanning. A compatible reader sends a signal, and the RFID tag responds with stored information. Passive tags obtain the energy needed for communication from the reader’s field. Because visual line of sight is generally unnecessary, RFID can identify suitable tagged objects even when their labels are not directly visible.

3. Does RFID need an internet connection?

No. Basic RFID communication between a reader and a tag does not require an internet connection. However, a connected application may need a local network, server, or internet access to transfer records, synchronize inventory, or share information with other business systems. The communication requirements depend on the application architecture.

4. Can RFID read multiple tags at once?

Yes. Suitable RFID systems use anti-collision procedures to identify multiple tags within a reading zone. The number of tags successfully read depends on the reader, protocol, tag design, antenna arrangement, and operating conditions. Dense tag populations and poorly controlled reading zones may require additional configuration and testing.

5. What is the difference between RFID and NFC?

NFC is a short-range wireless technology operating at 13.56 MHz and is closely related to HF RFID. However, not every HF RFID device is NFC-compatible. NFC supports specific communication modes and standards commonly used in contactless payments, device pairing, and access applications. Compatibility depends on the protocols supported by the card, tag, and reader.

6. Can RFID track an item’s real-time location?

RFID can record an item’s presence or movement when it passes a reader or enters a defined reading area. A conventional passive RFID system does not automatically provide continuous GPS-style location tracking. To determine location, businesses typically use multiple readers, fixed checkpoints, or other location technologies combined with software.

7. Is RFID better than a barcode?

Neither technology is universally better. RFID can be useful for identifying multiple items without scanning each label individually, while barcodes are often simpler and less expensive for individual product identification. The right choice depends on the number of items, operating process, required reading speed, environment, and total system cost.