How to read and write NFC M1 card?
First of all, this is just a tutorial, there is no complete code. Overview What is the NFC M1 card? The NFC M1 is a passive RFID/NFC card produced by NXP Semiconductors. It has 1 KB of storage, divided into 16 sectors. It operates at 13.56 MHz (High Frequency), which is the standard frequency for NFC. It follows the ISO/IEC 14443-A(Type-A) protocol. For example diagram: Read Card How to read card in Android? First, you should have a android phone of NFC function. You must be enable NFC in your android phone. A empty or useless card. Let’s write code. AndroidManifest.xml Request permissions <uses-permission android:name="android.permission.NFC" /> <uses-feature android:name="android.hardware.nfc" android:required="true" /> MainActivity.kt Define a NFC adapter: private var nfcAdapter: NfcAdapter? = null, NfcAdapter is android.nfc.NfcAdapter Init NFC adapter in MainActivity#onCreate method: this.nfcAdapter = NfcAdapter.getDefaultAdapter(this) Create a override method(For example): If you need to read cards from other SAKs or card models, you will need to write the corresponding multi-branch conditions yourself. ...