An RFID (Radio Frequency Identification) card is a contactless smart card that uses radio waves to transmit data from an embedded chip to a reader, typically for access control, payments, or identification.
RFIDCardReader/
├── android/ # Android-specific implementation
│ ├── src/main/java/com/rfid/reader/
│ │ ├── MainActivity.kt
│ │ ├── RFIDReaderService.kt
│ │ ├── MifareClassicHandler.kt
│ │ └── USBReaderManager.kt
│ └── src/main/AndroidManifest.xml
├── harmony/ # HarmonyOS-specific implementation
│ ├── entry/src/main/ets/
│ │ ├── MainAbility/
│ │ │ └── MainAbility.ets
│ │ ├── pages/
│ │ │ └── Index.ets
│ │ └── nfc/
│ │ ├── NFCTagHandler.ets
│ │ └── CardEmulation.ets
│ └── entry/src/main/resources/
│ └── base/
│ └── profile/
│ └── module.json5
└── common/ # Shared utilities
├── CardDataModels.kt
└── ByteUtils.kt
Technical Support：
https://www.tjnfctag.com/
https://www.tjnfctag.com/rfid-card/
https://www.tjnfctag.com/rfid-oem/
https://www.tjnfctag.com/hotel-key-cards/
https://www.tjnfctag.com/hotel-credit-cards/
https://www.tjnfctag.com/how-to-get-rfid/
https://www.tjnfctag.com/where-can-i-get-rfid/
https://www.tjnfctag.com/custom-rfid-wooden-card/
https://www.tjnfctag.com/custom-rfid-metal-cards/
https://www.tjnfctag.com/product-category/brand-hotel-card/