Keycard Pal

Keycard Pal is an open-source, air-gapped companion app for the Keycard hardware wallet. Your private keys live on a PIN-protected NFC smartcard. They never touch your phone and never touch the internet. HOW IT WORKS Your software wallet shows a transaction as an animated QR code. Scan it with Keycard Pal, review every detail on screen, then approve by holding your Keycard to your iPhone. The signature comes back as a QR code for your wallet to scan. No network pairing, no cloud, no accounts. REVIEW BEFORE YOU SIGN - Full decode of Ethereum transactions: transfers, ERC-20 sends and approvals, contract calls - EIP-712 typed data review, including a permit view that warns about unlimited token approvals - Bitcoin PSBT review with inputs, outputs, fees and change detection - Optional transaction simulation and ENS name resolution WORKS WITH YOUR WALLET Connect with animated UR QR codes or…