Bitcoin Card Wallet 1.0

Features

Manage Wallets: create seeds, public key, mnemonic words, balance
Transaction Signing: Sign Bitcoin transactions directly on the device using your seed or RFID tag.
Seed Storage on RFID Tags: Store your seed securely on an RFID MIFARE 1K tag (optionnal).
Encrypted Seed Backup: Encrypt and store your seed on RFID tags for enhanced protection.
Seed Restoration: restore your seed from RFID tags,or by manually entering mnemonic words.
Transaction File Handling: Sign and export PSBT transaction files directly on the device.
QR Code: Generate and display QR codes for easy sharing of Bitcoin and balance addresses.
USB Typing: Emulate a USB keyboard to type out Bitcoin addresses.
SD Card: Support for SD card storage to save and retrieve wallet data and saving PSBT file.
Passphrase: Generate and use seeds with an optional passphrase for enhanced security.