emv_nfc_reader

A powerful Flutter plugin for reading and extracting comprehensive data from EMV (Europay, Mastercard, and Visa) NFC cards.

Features

• Standard Data Extraction: PAN (Card Number), Expiry Date.
• Advanced Data Extraction:
  • Cardholder Name (from tags or Track 1 fallback).
  • Bank Details (IBAN, BIC).
  • PAN Sequence Number.
• Usage & Security Counters:
  • Application Transaction Counter (ATC) in decimal.
  • PIN Try Counter in decimal.
  • Last Online ATC in decimal.
• Transaction History: Extracts and parses the card's internal transaction log (Date, Time, Amount, Currency).
• Proprietary Data: Fetches Issuer Application Data (IAD), Application Default Action (ADA), and Form Factor Indicator.
• Robust Parsing: Handles PDOL (Processing Options Data Object List) and AFL (Application File Locator) logic automatically.

Getting Started

Android Setup

Add the following permission to your AndroidManifest.xml:

<uses-permission android:name="android.permission.NFC" />
<uses-feature android:name="android.hardware.nfc" android:required="false" />

Usage

import 'package:emv_nfc_reader/emv_nfc_reader.dart';

final _emvNfcReader = EmvNfcReader();

// Start scanning for a card
try {
  final Map<String, String>? cardData = await _emvNfcReader.startReading();
  if (cardData != null) {
      print('PAN: ${cardData['pan']}');
      print('Expiry: ${cardData['expiry']}');
      print('Holder: ${cardData['cardholder']}');
      print('ATC: ${cardData['atc']}');
  }
} catch (e) {
  print('Error reading card: $e');
}

Data Fields

The startReading() method returns a Map<String, String> containing:

Key	Description
pan	Formatted Card Number
expiry	Expiry Date (MM/YY)
cardholder	Cardholder Name
iban	International Bank Account Number
atc	Transaction Counter (Decimal)
pinTry	PIN Attempts Remaining (Decimal)
transactions	Historical transactions (formatted)
...	And many more technical tags

Limitations

• Hardware Dependency: Requires an NFC-enabled Android device.
• Issuer Privacy: Some banks opt-out of sharing certain fields (like IBAN or Name) via the contactless interface.
• Security: This library cannot extract PINs or Private Keys.

Feedback

If you found this useful, give the package a ⭐ on GitHub and a 👍 on pub.dev. It helps other developers discover it!

Have questions or feature requests? Open an issue on GitHub or drop a comment below.

License

MIT License.