Coldcard Q

Coldcard Q is a Bitcoin-only hardware signing device designed for transaction review without exposing private keys to a general-purpose computer. A full QWERTY keyboard, QR scanner, large color display, dual secure elements, battery operation, microSD support, and NFC provide several ways to build and authorize partially signed Bitcoin transactions. Coverage should follow firmware, signing standards, backup and recovery, connectivity, security research, supply-chain issues, and model support. Other Coldcard devices and Coinkite software retain separate tags unless compatibility or migration directly concerns Coldcard Q.