Description: COLDCARD Is The Most Trusted and Secure Bitcoin Signing Device (aka. Bitcoin Hardware Wallet)
Verifiable Source Code All of the Coldcard code is viewable, editable, and verifiable. You can compile it yourself.
True Air-gap Only signing device (hardware wallet) with option to avoid ever being connected to a computer, for its full life cycle: from seed generation, to transaction signing. Uses PSBT (BIP174) natively!
Full-sized numeric keypad makes entering PIN easy and quick.