NFC Open ReWriter
OPEN SOURCE. HANDS ON.
An NFC workbench for curious people and the developers building what comes next.
Read and write NFC tags. Explore their memory. Turn tag responses into your next command.
A look at the current development build. Store versions may differ.
Your tags. A little more possibility.
01 / PLATFORMS iOS & Android
02 / BUILT WITH React Native
03 / LICENSE MIT open source
04 / APP LANGUAGES English · 繁體中文 · 日本語
FROM THE FIRST TAP TO THE NEXT PROTOTYPE
Start with everyday reading and writing. Go deeper when your project needs it.
Inspect tag identity, technologies, and NDEF data. Write text, links, phone and email shortcuts, Wi-Fi records, and vCards. Save records to open, copy, and share later.
How a record is opened depends on the receiving device. iOS does not natively open NFC vCard records.
Build NFC-A or ISO-DEP command flows with response capture, variables, conditions, delays, and bounded repeats. Inspect commands, responses, and decisions in the execution trace.
Take a closer lookInspect readable Type 2 memory pages with raw bytes and annotations. See model-specific layouts for NTAG213, NTAG215, and NTAG216, and bounded data-area scans for other compatible tags.
Results depend on the tag and access conditions. A generic scan is not a full physical-memory dump.
A WORKBENCH THAT GOES WITH YOU
A command can tell you what to do next. Capture part of its response, use it in a later command, or choose a branch based on the value.
Talk to your tag using NFC-A or ISO-DEP.
Capture response bytes as variables and choose the next step.
Review the commands, responses, and branch decisions.
INSIDE THE APP
Six views of the development build.
Open any screenshot for a closer look.
Read tag information and NDEF records.
Choose the record that fits your idea.
Reach commands, flows, and memory tools.
Compose a response-driven NFC workflow.
Inspect what was sent and what came back.
Inspect page data alongside its interpretation.
Screenshots show the app’s interface in the selected language, using demo tag data in an iOS simulator. They illustrate the development build, not a new hardware test. Store versions may differ.
OPEN BY DESIGN
The workbench is also a starting point. Read the React Native source, adapt it to your workflow, or use it to explore NFC integration in your own app.
MIT licensed. NFC library: react-native-nfc-manager.
Explore the sourceHAVE A PROJECT IN MIND?
Talk to the team about NFC prototyping, React Native integration, or a custom mobile app.
Email nfctogo@gmail.com. Tell us your target platform, tag or hardware, and what you want to build.
You need an NFC-capable iPhone or Android device and a compatible tag. Available technologies and operations depend on the device, operating system, and tag.
Recognized NTAG213, NTAG215, and NTAG216 tags use model-specific page ranges. Other compatible Type 2 tags use a bounded scan of the data area declared by their Capability Container. Unreadable pages remain marked unavailable; an incomplete scan does not establish why access failed. The scan sends identification and read commands only, although tag-side read counters may advance.
This page showcases the current source and development build. Screenshots and newer features, including Flow Script, Type 2 Memory Scan, and the three-language interface, may differ from the app currently available in the stores. Check the store release notes or build from source for the corresponding version.