Scan any NFC transponder with your phone and find out which Dangerous Things implant is compatible with it. If your card or fob can be replaced with an implant, this app will tell you which one.

1. Scan - Hold your phone to any NFC card, fob, or tag
2. Identify - The app detects the exact chip type (NTAG, MIFARE Classic, DESFire, etc.)
3. Match - See which Dangerous Things implant products are compatible
4. Learn - Get details about the chip, cloneability, and implant options

The app matches scanned chips to current Dangerous Things products including:

• xNT / flexNT - NTAG216 NFC implants
• xSIID / NExT v2 - NTAG I2C with LED
• NExT / dNExT - Dual-frequency (NFC + 125kHz)
• xMagic / xM1 / flexM1 v2 - Magic MIFARE Classic (cloneable UID)
• flexUG4 / dUG4T - Ultimate Gen4 magic MIFARE
• xDF3 / flexDF2 - DESFire secure NFC
• Apex Flex / flexSecure - JavaCard secure element
• VivoKey Spark 2 - Cryptobionic identity
• xSLX - ICODE SLIX NFC Type 5

If no matching implant is found, the app directs you to the Dangerous Things conversion service.

• Android - Full chip detection support including MIFARE Classic sector operations
• iOS - Full detection for most chip types. MIFARE Classic is detected but sector-level cloning operations require Android

Requires Node.js 20+ and the React Native development environment.

npm install
npx expo prebuild

# Android
npx expo run:android

# iOS
cd ios && pod install && cd ..
npx expo run:ios

NFC cannot be tested in simulators. A physical device is required.

This app works entirely offline. All chip detection and product matching happens on-device. No data is collected or transmitted during scanning. Outbound product links include UTM parameters for analytics — no personal data or scan results are sent.

Full privacy details: NFC Identifier App - Dangerous Things Forum

GNU Affero General Public License v3.0