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RFID in retail means attaching a small radio tag to a product, then reading that tag with a reader that captures its identifier without each item being aimed at and scanned one by one. Retailers use it mainly to learn what stock they hold and where it is, with less manual counting than barcode workflows usually require. It is a tool for specific gaps in a store’s operations, not an automatic replacement for barcodes.
How RFID works in a store
An RFID system has three parts: a tag carrying a unique identifier, a reader that sends radio waves and receives the tag’s reply, and software that turns each read into a stock record. GS1, the standards body behind the barcode, describes EPC-enabled RFID as a way to identify consumer products as they move from factories through distribution centers into stores. An EPC (Electronic Product Code) is a unique identifier for a physical object, represented in a form that can be encoded on a tag and shared through business systems. See the GS1 RFID overview and the GS1 System Architecture Document.
The read sequence
- A tag is applied to an item or its packaging and encoded with the item’s EPC.
- When goods arrive at the store, a reader captures each tag’s identifier.
- The system matches the EPC to the product record and updates the stock count.
- Shop-floor readers repeat reads to show what is on shelves and in the backroom.
- Point-of-sale readers capture items at checkout.
Which tags are in use
GS1 says UHF passive tags, also called RAIN RFID tags, are the most broadly implemented RFID tags in its industries. “Passive” means the tag has no battery of its own; it runs on power from the reader’s radio signal. A RAIN reader can capture a tag without the direct line of sight a barcode scan requires.
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GS1’s retail system example describes a set of workflows that an implemented system can support. Treat it as a menu of possibilities, not a list every installation includes.
#1 Best Overall
- 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
Receiving and stock updates
Readers capture each item’s identifier when goods arrive at the store, so inventory records update without item-by-item scanning at the dock.
Shelf and backroom replenishment
Shop-floor reads can support low-stock alerts and replenishment, which is where the stock-visibility benefit shows up day to day.
Rank #2
- 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
Checkout, article surveillance and returns
Point-of-sale readers can support checkout, electronic article surveillance, inventory updates, paperless returns and warranty claims, according to the same GS1 example.
Rapid asset and stock counts
GS1 describes RAIN RFID readers as suitable for rapid asset inventory, including reads of items that are stacked or inside sealed containers. Those are the cases where optical scanning is slowest or impractical.
Rank #3
- 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
RFID or barcodes: how to compare
GS1’s inventory guidance states: “Although there are clear advantages of using both barcode and RAIN RFID technologies, determining which technology is right for your business can be challenging.” The table compares the two on the factors that usually drive the decision. The source for each row is GS1’s inventory guidance and benefits guidance, except where noted.
| Factor | Barcode scanning | RAIN RFID (UHF passive tags) |
|---|---|---|
| Line of sight | Required; each barcode must be optically visible to the scanner | Not required; a reader can capture a tag without direct line of sight |
| Stacked or sealed items | Items must be exposed to be scanned | GS1 describes reads of stacked items and items inside sealed containers |
| Staff time for inventory | Not stated as a baseline in these sources | GS1 cites an approximate 95% reduction in average inventory time; the baseline for that comparison is not stated |
| Accuracy | Not stated in these sources | Participating retailers in a 2018 GS1 UK study reported 93–99% accuracy |
| Real-time stock visibility | Depends on how often items are scanned | Depends on reader placement and system integration; not stated as automatic |
| Where it fits | Optical scanning works and item-level visibility is sufficient | Optical scanning is impractical, or counts are slowed by line-of-sight limits |
The table is a framework, not a verdict. GS1 states that RFID is not automatically the better choice, and that results depend on the right tag, reader, system integration and use case.
Rank #4
- 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
What the published figures show
GS1’s benefits guidance (modified 30 August 2024) states: “RAIN RFID systems help companies cut costs, improve customer service, reduce labor, increase accuracy and improve production throughput.” That is a general statement of benefits. The specific figures below each carry their own conditions.
- About 95% reduction in average inventory time. GS1 presents this in its 2024 benefits guidance as an approximate benefit. It is not a guarantee for every retailer or deployment, and the source does not state the baseline it is measured against.
- Inventory accuracy improved by more than 50%, with participating retailers reporting 93–99% accuracy. This comes from GS1 UK’s 2018 summary of a study by Professor Adrian Beck covering ten global retailers and brands. Read it as the experience of those participants, not a universal rate.
- Up to 5.5% potential retail sales increase. Also from the 2018 GS1 UK summary, and described there as a potential rather than a forecast. It does not establish that RFID causes a sales increase in any particular store.
Both GS1 UK figures are from 2018, so they are nearly eight years old. Check the current GS1 pages before using them in a business case.
Best Value
- 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
Privacy and responsible use
GS1 says a RAIN RFID tag in most cases contains no personally identifiable information. The operator still has to ensure that tag data cannot be linked to personal data. The real risk is linkage: if a loyalty card or other customer identifier is associated with an item’s EPC at checkout, a tag read can become personal data. The statement that tags can never be linked to a person is too simple and should not be repeated as a guarantee.
Practical steps that follow from GS1’s privacy guidance and its consumer-product guidelines:
- Map which systems can join EPC data to loyalty, payment or other customer records, and restrict those joins.
- Give customers notice where tags are used in the store or on products.
- Provide consumer choice where the guidance calls for it, and document how it works.
Before you deploy: practical checks
- Identify the gap. Name the count, receiving or checkout step that is slow, error-prone or blocked by line-of-sight limits. If no step fits, barcodes may already be sufficient.
- Confirm hardware fit. If you are shopping for a reader, search for “handheld UHF RFID reader.” GS1 discusses handheld readers for inventory and identifies passive UHF/RAIN RFID as the common tag type in its industries. UHF bands are allocated differently by country, so confirm that both readers and tags are approved for your region. Model names, prices and availability vary by manufacturer and market, and this article does not name a specific device.
- Plan the integration. Readers add value only when EPC reads are matched to product records and inventory systems. Budget for that work alongside the hardware.
- Trial against your own baseline. Measure count time, accuracy and stock visibility before and after a limited rollout, using your own numbers rather than the figures above.
For background on the standards behind EPCs, see GS1’s RFID standards page.
Quick Recap
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