Radio frequency identification (RFID) is a family of technologies that uses radio-frequency fields or waves to identify tagged objects automatically. In a typical system, a reader sends a signal to a tag and receives the tag’s digital data, often an identifier. Unlike a barcode scan, RFID does not inherently require optical line of sight.
How an RFID system works
An RFID system has tags and a reader, also called an interrogator. The reader communicates with a tag over radio frequency, then converts the response into digital data for software or another system to use. A tag commonly carries an identifier; how much else it can provide depends on the technology and application.
- The reader sends a signal. It creates or transmits a radio-frequency field or wave suited to its tag type and frequency band.
- The tag responds. A passive tag uses energy from the reader’s field and reflects a modulated signal back. An active tag sends a signal using its own transmitter.
- The reader captures the data. The reader decodes the response, which may then be used to identify or track an object or support another business process.
In the GS1 system, an Electronic Product Code (EPC) is an identifier syntax for physical objects, unit loads, locations, and other entities relevant to business operations. GS1’s EPC Tag Data Standard specifies EPC formats and encodings. GS1’s RFID overview describes the role of EPC in its standards.
Passive, battery-assisted passive, and active tags
The first practical distinction is how a tag gets power and sends its response. These categories differ in communication method, not just in battery life.
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- What You Get: The package includes 1pcs 125KHz handheld RFlD writer, 5pcs writable keyfob and 5pcs writable cards. (Notice: using the RFID reader needs two 1.5V AAA batteries and the batteries are not included in the package)
- RFID Reader Writer: The card and in the combination are the default empty command products. To test read/write functions, first copy data from free labels using a replicator, then write it into cards/keychains before replacing the use of
- Portable RFID Reader: The rfid copier is designed small size and light weight, it is convenient for flow of work, no need to connect to a computer, on-site copy. Copiers can write multiple types of cards, including T5577, EM4205/4305, EL8265/8268, SIC7888
- Purchase Notice: If your product is EM4100, EM4305, or TK4100 with the same frequency but different cards, please confirm the card before buying. The machine can copy parking cards, access cards, switches cards, including small button-type, shaped cards
- Proximity cards are reusable. Default blank chips require writing by first reading your 125kHz device's instructions before transferring to key chains/cards. Note: This smart product requires pre-writing low-frequency data from your original device; unusable directly. Replicator enables multi-use cloning of single-copy cards. Any questions, please contact us
| Tag type | Power and communication | Typical distinction |
|---|---|---|
| Passive | Has no radio transmitter and normally no power source of its own. It harvests energy from the reader’s field and returns data by backscatter. | Its response depends on a reader’s field being present. |
| Battery-assisted passive | Uses a power source to run circuitry or sensors, but communicates by backscatter rather than transmitting its own radio signal. | Combines battery-supported functions with a backscatter reply. |
| Active | Has a power source, commonly a battery, and a transmitter that can broadcast its own signal. | Some real-time location systems use active tags that transmit at intervals for readers and software to process. |
GS1 explains passive and active tag operation in its RFID system overview and its explanation of the difference between passive and active tags.
RFID frequency bands and compatibility
RFID is not one radio system with one universal reader. Low frequency (LF), high frequency (HF), and ultra-high frequency (UHF) systems serve different requirements. NFC is among the commonly used HF-related technologies, while RAIN RFID is passive UHF. GS1’s standards focus on passive HF and UHF, and passive UHF RAIN tags are broadly implemented in its industries.
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- Multi-frequency Compatibility: The rfid reader and writer assist in identifying ID cards and IC cards of different frequencies, including 125KHz, 175KHz, 250KHz, 300KHz, 375KHz, 500KHz, 13.56MHz and other frequencies
- Smart Card Reader: This rfid copier can read many types of cards, including T5577, S50, S70, TK4100, EM4100, EM4200, TK4100-D, TK4168, HID ProxCard II, AWID, Paradox and other common cards on the market. If you aren't sure your card whether can be used or the device can not read your card, please contact us
- App connection: You can use the App to operate or decode through a computer or mobile phone, and upgrade the App for free(Notice: when the computer identifies it as malware, you should exit the computer's protection software)
- NFC Simulation: Independent NFC simulation function, allowing devices with NFC function to simulate encrypted IC cards with one button. Also, You can directly enter the card number to be written by key, which is convenient and fast
- Communication Interface: The card reader is with low power consumption in standby mode and supports Type-C comm, making it convenient and practical. And the rfid copier is with 2.8-inch TFT color screen, which can display various card information more intuitively
Frequency and protocol matter when choosing equipment. GS1 specifications describe distinct HF and UHF air interfaces, including UHF EPC/RFID around 860–960 MHz and HF EPC/RFID at 13.56 MHz. Those figures describe the cited standards, not a complete guide to radio-frequency allocations in every country. A reader and tag must support compatible frequencies and protocols; an RFID reader should not be assumed to work with every RFID tag. See GS1’s frequency explainer and its General Specifications v24.0.0.
Read range and line of sight
RFID can capture data without optical line of sight, but read distance and performance depend on the tag type and the particular system. GS1 says unique EPCs on RAIN RFID tags can be captured at high rates and at distances well in excess of 10 metres without line-of-sight contact. This is a capability statement about RAIN RFID, not a range guarantee for every RFID installation. GS1’s RFID page gives that specific description.
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- RFID Reader Writer: The ChameleonUltra is not only a rfid copier, but also a rfid tag. You can use it to clone a smart card data and it can be used to test and validate the behavior of other RFID control systems, as if it is a real RFID keychain
- Multifunctional Compatible: The ChameleonUltra is designed dual frequency in one device. It supports 125Khz ID cards and 13.56Mhz IC cards(Semi-encrypted cards, full-encrypted cards and third generation of vulnerability card cards). Notice: Please use the different sides of the device to read the 125khz and 13.56mhz cards
- Smart Cards Replacement: There are 8 card slots, it can simulate 8 IC cards and 8 ID cards at the same time. It means one card access all control systems in your daily life. (Notice: It is not a universal card, it requires original cards to copy. The included USB drive has user manual, please check)
- Convenient Use: The shape of the rfid cloner is sleek. Its overall size is 4.5 x 2.45 x 0.75cm, very lightweight and can be carried around. And it can be used (3 to 5 times one day) for more than one month when charged once(Notice: The upgraded firmware is not stable yet, please do not update the firmware, the old firmware will not affect normal use)
- Widely Applicable Scenarios: The rfid writer supports most common cards, such as residential community access card, attendance card, elevator card(full encryption card with scrolling code is not supported) and NFC bracelet, you always have chance to use it in your daily life
What RFID is used for—and what to consider
RFID can support asset management and tracking, access control, and automated payment, among other applications. The right configuration depends on the business process: tag type, frequency, reader, software, and deployment conditions can all differ. NIST’s 2007 overview, updated in 2017, emphasizes that components and customizations vary and that security risks and available controls therefore vary by system. It is useful background, not a complete account of every current threat or control. See NIST’s overview of RFID security.
There is also a specific health-related consideration: the FDA says potential interference with pacemakers, implantable cardioverter defibrillators (ICDs), and other electronic medical devices merits attention. Its page describes ongoing work to understand where RFID is used, what frequencies and power levels are involved, and how potential electromagnetic interference may be mitigated. This does not mean that every RFID installation causes interference or quantify the risk for a particular device or setting. See the FDA’s RFID information.
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- RFID Reader Writer: The rfid copier supports various cards, including HID cards. This rfid copier allows you to easily read and write types of cards. If you aren't sure your card whether can be used, please contact us before purchase. Notice: Before reading the card, please press "MODE" button to choose the same frequency as your original card. Or press the "SCAN" button to automatically identify the frequency of the original card
- RFID Copier: The rfid Reader Writer enabling seamless communication between your devices when using it for access control and data transfer. It can clone most of access control card, elevator card, attendance card and parking card in the market
- Easy to Use: The RFID copier duplicator is designed 2 power supply mode, you can use 4 AAA batteries(not included in the package) or directly connect to the computer(only supports windows OS) with USB port(Connect the device to the computer first, then turn on the device). And it is equipped with a HD 2.75 inch full color screen display
- Various Card Supported: The rfid reader supports frequency: 125KHz, 250KHz, 375KHz, 500KHz, 625khz, 750kHz, 875KHz, 1000KHZ, 13.56MHz (ISO1443A/B). (Notice: When cracking the 13.56MHz encryption cards, you should connect the reader to the computer)
- Package Included: 1x RFID ID/IC Card Reader Writer, 1x USB Cable, 5x T5577 KeyChain, 5x T5577 cards, and 5x UID Key Chain. The sensing area is on the back of the device, If you cannot read cards, please adjust the position and try again
Definition in one sentence
GS1 defines radio frequency identification as “A technology that uses radio frequency electromagnetic fields or waves to automatically identify and track tags attached to objects.” That definition describes RFID as a broad category; the details of power, frequency, range, and data exchange depend on the particular system. GS1 Glossary: radio frequency identification.
Quick Recap
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- RFID Reader Writer: The rfid copier supports various cards, including HID cards. This rfid copier allows you to easily read and write types of cards. If you aren't sure your card whether can be used, please contact us before purchase. Notice: Before reading the card, please press "MODE" button to choose the same frequency as your original card. Or press the "SCAN" button to automatically identify the frequency of the original card.
- RFID Copier: The rfid Reader Writer enabling seamless communication between your devices when using it for access control and data transfer. It can clone most of access control card, elevator card, attendance card and parking card in the market(Note: When prompted ''write failed'', please press the ''write'' button several times more)
- Various Card Supported: The rfid reader supports frequency: 125KHz, 250KHz, 375KHz, 500KHz, 625khz, 750kHz, 875KHz, 1000KHZ, 13.56MHz (ISO1443A/B). (Notice: When cracking the 13.56MHz encryption cards, you should connect the reader to the computer)
- Easy to Use: The RFID copier duplicator is designed 2 power supply mode, you can use 4 AAA batteries(not included in the package) or directly connect to the computer(only supports windows OS) with USB port(Connect the device to the computer first, then turn on the device). And it is equipped with a HD 2.75 inch full color screen display and multilanguage voice broadcasting
- Package Included: 1x RFID ID/IC Card Reader Writer, 1x USB Cable, 5x T5577 KeyChain, 5x T5577 cards, and 5x UID Key Chain. The sensing area is on the back of the device, If you cannot read cards, please adjust the position and try again
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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