The main photo shows an OEM board, not an enclosed dongle. Specify the housing required for your order.
JustID NFC USB Dongle: UID Keyboard Reader
Updated 2026-09-10
JustID is a Digital Logic USB NFC identifier reader. It can deliver a card UID through keyboard emulation or a virtual COM connection, depending on configuration. It is useful when an application needs an identifier instead of a general tag-writing API. Confirm the supported card standard, firmware and output format against the receiving application.
- MOQ
- Confirm configuration
- Lead time
- Confirm availability
- Samples
- Evaluation quotation
Confirm the selected construction, chip and customization.
Preparation and transport are scheduled separately.
Confirm availability, fees, freight and applicable credits.
- Project quote after chip, construction, encoding and quantity review
- Approve the hardware, firmware and integration test before rollout
- Stock and custom sample terms are confirmed before shipment
Selection & sample approval
Does your application need a UID or access to card memory?
Include with your request
- Card technology and whether UID input is sufficient for the application.
- HID text entry or CDC ACM virtual COM output.
- Hexadecimal or decimal format, byte order, prefix, suffix and repeat behavior.
- Enclosed dongle or OEM board; host device and available USB clearance.
Check on the sample
- Compare the received identifier with a known reference.
- Test keyboard locale, focused fields and reconnect behavior.
- Test different cards and repeated presentations for duplicate input.
Spec Check
What to confirm before hardware testing
Chip protocol, operating system, interface, and SDK expectations should all be clear before a reader sample is approved.
| Operating Frequency | 13.56 MHz (HF) |
| Evaluation and Order Quantity | Confirm the exact revision, evaluation unit and rollout quantity in the quotation |
| Conformity and Warranty | Request current documents and commercial terms covering the offered hardware revision |
| Function | Identifier reading; do not assume general-purpose card memory writing |
| Card Standards | Manufacturer lists ISO/IEC 14443 A/B and ISO/IEC 15693; confirm the offered firmware scope |
| USB Modes | HID keyboard emulation and CDC ACM virtual COM, according to configuration |
| Output Configuration | Confirm UID representation, byte order, prefix and suffix |
| Read Range | Manufacturer reference 40 mm enclosed or 55 mm OEM; depends on card and installation |
| Housing | Enclosed and OEM configurations must be distinguished in the quotation |
Shortlist Logic
Why this reader setup makes the shortlist
Hardware usually stays in consideration when it reduces integration risk and supports the exact credential workflow being planned.
Use Cases
Where teams usually use this reader setup
Deployment context helps determine whether this hardware belongs at a desk, in a kiosk, in a gate, or inside a device.
UID input into a workstation application
Attendance or enrollment identifier capture
OEM identifier input after host integration testing
JustID NFC USB Dongle Types
1Check the exact hardware and software revision
Use the manufacturer’s current documentation to confirm the supplied hardware, connector, firmware and supported operations. A family name or common radio frequency is not enough to approve a host integration. Read the manufacturer’s model reference.
2Identifier lookup is different from secure authorization
A UID can be used as a database lookup key, but reading it does not prove the cardholder’s authorization or authenticate a protected card application. The receiving system must define its security requirements. If protected data access, tag writing or a specialized mobile credential is required, select and evaluate the corresponding hardware and firmware explicitly.
3Test the input format in the real application
Use known test cards to compare decimal or hexadecimal output and byte order. In HID mode, verify keyboard locale and input focus; in virtual COM mode, verify port handling and reconnect logic. Agree how repeated taps, absent cards and unknown identifiers should be handled before deploying multiple units.
How Ordering Works
From inquiry to delivered justid nfc usb dongle in four steps
Agree the configuration, evaluation and release conditions for this order before planning a rollout.
- 1After spec review
Send your inquiry
Share quantity, chip and application — or send the configuration straight from the estimate above. We reply with an exact quote and a chip / format recommendation.
- 2Terms confirmed
Evaluate the reader and software
Quote an evaluation unit with the required cables, accessories and documentation. Run the intended command with your own card and host application.
- 3You control the clock
Approve the tested revision
Record hardware and firmware versions, host driver or library, card type, command results and recovery behavior. Approval applies to that tested combination.
- 4Confirm current supply
Production & delivery
Confirm availability, quantity, configuration work, accessories, warranty and shipment release in the offer. Carrier transit and destination clearance are planned separately.
Details in writing:sample policy ·shipping & Incoterms ·quality control process
Supplier Fit
Why buyers source JustID NFC USB Dongle from RFIDAK
Once the format is right, most teams still need confidence in manufacturing control, sample support, and repeat-order reliability.
Company management-system scope and finished-product evidence are different. Review the certification scope.
RFID sourcing, specification review and production coordination with partner lines.
Test compatibility before bulk approval; stock and custom sample terms follow the published sample policy.
Next Reading
What to read before reader hardware testing
Use these references when protocol fit, interface choice, and reader workflow still need to be validated before sampling.
Comparison Pages
Useful if you are still choosing between two directions
These head-to-head pages help buyers compare chip, frequency, material or format decisions before they lock a sample plan for this product.
Commercial Fit
How buyers usually move this product from shortlist to sample
Most inquiry-ready visitors want to know whether this product matches their workflow, region and approval stage. These cues help them move faster without leaving the product page.
Quote Checklist
What to send us for a faster recommendation
- Exact card or tag chip, protocol and the operation your application must perform; use authorized non-sensitive test data.
- Host OS and architecture, application environment and required driver, API, HID or virtual-COM behavior.
- Current hardware revision, firmware and connector if replacing an installed reader; include enclosure and power constraints.
- Evaluation quantity, rollout quantity, integration deadline, destination and any revision-specific documentation requirements.
Market Notes
Regional conversations often tied to this category
Nearby Options
Compare nearby reader setups before testing starts
Teams often keep a few hardware paths open until interface, deployment style, and credential support are all clear.
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Compare this optionBefore You Order
Procurement guides every RFID Readers buyer reads first
Five short reads on the procurement-side topics every B2B RFID buyer wants answered before signing a quote — MOQ thresholds, lead time reality, pricing transparency, sample policy, and how to audit a Chinese factory before your first order.
Buyer Questions
Questions buyers usually ask before sample approval
These FAQs cover the points that usually come up between a first shortlist and a real sample or quote request.
Can a standard JustID UID reader program NFC tags?+
The standard JustID use case is card-identifier output. Choose and test a reader-writer with the required protocol and commands when the task is writing NDEF or application memory. Do not infer a write function from the NFC label.
What quantity and specifications are needed to quote JustID NFC USB Dongle?+
The minimum order is confirmed for the selected configuration. Specify the hardware revision, interface, accessories, evaluation quantity and rollout quantity. Include the destination and required date so the offer can identify setup, packing and freight separately.
Can I evaluate JustID NFC USB Dongle before a bulk order?+
Request a quotation for the exact evaluation unit, accessories and software requirements. Confirm current supply and test your own cards and host application before approving a rollout. A free-stock-tag allowance does not establish free reader hardware.
How is the lead time for JustID NFC USB Dongle confirmed?+
Request the schedule for the exact configuration and quantity. Hardware availability, revision and any configuration work must be confirmed before release. Preparation, carrier transit and destination clearance are separate; confirm the requested arrival date in the quotation.
How do I check JustID NFC USB Dongle compatibility?+
Confirm the card protocol, host interface, firmware, driver or SDK and the actual command required. Reading an identifier does not establish support for writing or an encrypted application. Validate a representative sample in the intended installation.
What customization and evidence should I request for JustID NFC USB Dongle?+
Confirm enclosure or OEM-board options, connectors, firmware configuration and the integration documents for the offered revision. Request the applicable model-specific conformity evidence and warranty terms. Component or company certificates do not establish approval of a finished reader or payment system.
How is international delivery of JustID NFC USB Dongle quoted?+
Provide the destination, quantity and packing requirement. Agree the transport mode, named place or port, Incoterms version, importer, insurance and required documents before shipment. Freight cost and risk transfer can occur at different points. Refer to the shipping and Incoterms page for the quotation checklist; no single transit time applies to every destination.