Note: This SDK is in beta and will be publicly available shortly

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Prerequisites

Before you begin, ensure you have:

  • Android device with SDK 25+
  • POW Cards Reader Library AAR file

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Installation

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Gradle Setup

Add the POW Cards Reader Library to your project by placing androidcore-powcards-reader-release.aar in your /libs directory and adding the following to your build.gradle:

dependencies {
    implementation(files("libs/androidcore-powcards-reader-release.aar"))
    
    implementation("org.bouncycastle:bcpkix-jdk15on:1.67")
    implementation("com.madgag.spongycastle:bcpkix-jdk15on:1.58.0.0")
    implementation("com.madgag.spongycastle:bcpg-jdk15on:1.58.0.0")
}

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Integration

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NFC Reader Setup

First, implement the NFC reader callback in your Activity:

class MainActivity : ComponentActivity(), NfcAdapter.ReaderCallback {
    private fun startNfcReader() {
        val nfcAdapter = NfcAdapter.getDefaultAdapter(this)
        var flags = NfcAdapter.FLAG_READER_NFC_A
        flags = flags or NfcAdapter.FLAG_READER_SKIP_NDEF_CHECK
        flags = flags or NfcAdapter.FLAG_READER_NO_PLATFORM_SOUNDS
        nfcAdapter.enableReaderMode(this, this, flags, null)
    }
}

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Reader Configuration

Initialize the POW Cards reader:

// Initialize reader
val androidCorePassReader = AndroidCorePassReader()

// Handle NFC tag discovery
override fun onTagDiscovered(tag: Tag) {
    val passId = androidCorePassReader.readPassId(tag)
}

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Error Handling

The SDK throws the following exceptions:

ExceptionDescription
DeviceRemovedTooSoonExceptionTag was removed before reading completed
NotSmartTagExceptionIncompatible NFC tag detected
SmartTagExceptionGeneral error during tag scanning

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Support

Need help? Contact us at info@passentry.com for:

  • Integration assistance
  • Credential requests
  • Technical support