Added #

• Receipt printing functionality via printBitmap() method
• Support for printing custom receipt designs to SUNMI thermal printer
• ReceiptWidget example demonstrating receipt layout design
• Image capture and printing workflow in example app
• Print button in demo app after successful card scan
• Comprehensive receipt design guidelines in documentation
• Printing troubleshooting section in README

Enhanced #

• Updated example app to include complete print workflow
• Added receipt printing section to README with code examples
• Enhanced API documentation with printing methods
• Added best practices for receipt widget design
• Improved error handling for print operations

Documentation #

• Complete receipt printing usage examples
• Receipt widget design patterns and guidelines
• Print error handling examples
• Receipt layout best practices (width, colors, fonts)
• Performance tips for printing operations

Added #

• Initial release of ITC SUNMI Card Reader plugin
• EMV card processing support for SUNMI devices
• Card data extraction (number, expiry, cardholder name, service code)
• Track 1 and Track 2 data access
• Real-time scan status callbacks
• Card type detection (Visa, MasterCard, UnionPay, Amex, JCB, RuPay)
• App selection handling for multiple payment apps
• Comprehensive error handling and recovery
• Support for chip cards, magnetic stripe, and contactless payments
• Utility methods for data formatting (card number, expiry date)
• Example app demonstrating plugin usage

Features #

• Android-only support (SUNMI devices exclusively)
• Minimum SDK 21 (Android 5.0+)
• Flutter 3.3.0+ compatibility
• MIT License
• Real-time status updates during scanning
• Automatic card type detection
• EMV-compliant processing

Supported Devices #

• SUNMI P2 series
• SUNMI P2 Pro
• SUNMI P2 Lite
• SUNMI V2 series
• Other SUNMI POS terminals with card reading capabilities

Dependencies #

• plugin_platform_interface: ^2.0.2
• SUNMI PayLib SDK 2.0.07
• SUNMI Printer Library 1.0.15
• BouncyCastle cryptography library 1.70

Documentation #

• Comprehensive README with usage examples
• Complete API documentation
• Troubleshooting guide
• Device compatibility information
• Security and privacy guidelines

API Methods #

• ItcSunmiCardReaderService.startCardScan() - Start card scanning
• ItcSunmiCardReaderService.stopCardScan() - Stop scanning
• ItcSunmiCardReaderService.selectApp() - Select payment app
• ItcSunmiCardReaderService.formatCardNumber() - Format card number
• ItcSunmiCardReaderService.formatExpiryDate() - Format expiry date
• ItcSunmiCardReaderService.getCardTypeDisplayName() - Get card type display name

Data Models #

• CardScanResult - Complete card data container
• CardScanStatusUpdate - Status update model

Example App #

• Simple demonstration app included
• Clean UI with status updates
• Error handling examples
• App selection dialog implementation