Operation and permissions
Identify what must be read or written and whether the project has the necessary keys or application credentials. Include a sample card and repeatable operation.
SDK / API / INTEGRATION PATH
Build the card operation your application needs.
Use this route for a custom application built around the manufacturer SDK or API. Local µFR models and Online variants use different software and connection paths; evaluate the required API, card and firmware together.
See the matching modelsDEFINE THE APPLICATION
Start with the parts that decide the fit.
Describe the job more precisely than “read NFC”. A card identifier, NDEF record, memory block and authenticated application are different operations. Begin with the card model and desired result. Then match the host library and connection before comparing enclosures or antenna formats.
Host and software
Name your operating system, CPU architecture and programming language. Evaluate the manufacturer library or network API examples in that target environment.
Connection variant
USB, serial and network options depend on the ordered model. An interface listed for a family does not mean every finished unit exposes all connectors.
THE HARDWARE
SDK / API reader writers
Protocols and connections depend on the selected configuration. Review the model details.
SDK reader / writers 
µFR Zero
µFR Zero USB Dongle
A compact USB reader writer for applications built with the manufacturer SDK.
SDK reader / writers 
µFR Zero
µFR Zero HS
A USB NFC reader writer for SDK-based desktop and equipment integrations.
SDK reader / writers 
µFR Zero
µFR Zero CS
A card-size NFC reader writer with connection options for custom integrations.
OEM modules 
µFR Zero
µFR Zero XL OEM
A large-antenna OEM module to evaluate in the finished equipment enclosure.
Network readers 
µFR Zero Online
µFR Zero Online
A network-capable NFC reader for integrations that need more than a host USB link.
SDK reader / writers
µFR Zero
µFR Zero QS (USB)
A compact USB NFC reader writer for applications using the manufacturer SDK.
SDK reader / writers
µFR Zero
µFR Zero Round + OLED Display (USB)
The USB Round configuration with OLED display for custom NFC applications.
Network readers 
µFR Zero Online
µFR Zero Online Round (Wi-Fi / BLE)
A round network NFC reader configuration with USB, Wi-Fi and BLE integration paths.
Network readers
µFR Zero Online
µFR Zero Online Ethernet (without PoE)
The Ethernet-capable Online configuration for wired NFC reader-to-server integration.
MAKE THE INQUIRY SPECIFIC
Tell us what the project needs.
- Which card or tag and which read/write operation?
- Which operating system, architecture and programming language?
- Which connector, enclosure and estimated quantity?
Selection questions
Is a UID keyboard reader a substitute for an SDK reader writer?
A keyboard reader supplies a card identifier. Choose a reader writer and suitable software path when the task requires card data access or writing.
Can I select hardware before checking the SDK?
A practical evaluation checks the card, operation, host library and hardware together. Confirm the software path before committing the installation design.