# NFC to RFID > Documentation exported for language models by KD Help Book — 13 page(s) across 1 book(s). Each link points at a clean-Markdown copy; `llms-full.txt` has everything inline. ## NFC to RFID - [NFC to RFID](md/nfc-to-rfid/index.md): NFC to RFID is an Android app that copies the UID of an NFC card onto a UHF EPC - [Requirements](md/nfc-to-rfid/requirements.md): Tested with Chainway R2, Chainway R3, Sunmi L2k, Sunmi L2s RFID and Sunmi L3. - [Supported readers](md/nfc-to-rfid/readers.md): All app functions — encoding, locking, scanning and validating — work on several - [Installation](md/nfc-to-rfid/installation.md): On a Sunmi device, install the app from the Sunmi App Store — open this link on - [Using the app](md/nfc-to-rfid/using-the-app.md): The bottom navigation has four tabs — About, Encode, Scan, Validate — - [Encoding a tag](md/nfc-to-rfid/encoding.md): The Encode tab copies an NFC card's UID onto a UHF tag in four steps. - [Bulk inventory and validation](md/nfc-to-rfid/scanning.md): Press Start scan or hold the trigger key to run a continuous UHF inventory - [One-by-one validation](md/nfc-to-rfid/validating.md): Tap a card on the Validate tab — the app searches for a tag carrying exactly that - [Settings](md/nfc-to-rfid/settings.md): Open the settings with the gear icon in the top bar. - [EPC encoding format](md/nfc-to-rfid/epc-format.md): The EPC is 96 bits (12 bytes, 6 words) and is written together with a new PC word, so - [NXP originality check](md/nfc-to-rfid/nxp-originality.md): On every card tap the app reads the NXP originality signature (DESFire family over - [Troubleshooting](md/nfc-to-rfid/troubleshooting.md): More than one tag answered during the check. Move other tags away or lower the - [Development](md/nfc-to-rfid/development.md): ./gradlew :app:assembleDebug