Summary

Keycard serves as an open-source air-gapped crypto hardware wallet designed to securely store and manage digital assets. It features multiple keys, clear signing algorithms, and the ability to operate on Ethereum and Bitcoin without needing specific software applications. The device is removable with a removable battery and supports a full open-source ecosystem compatible with ten different wallets. It also allows users to scan QR codes for their card to scan.

Shell is the primary software component that powers Keycard. Users can purchase the hardware wallet for use or upgrade the software version. Both platforms emphasize an airgap design that ensures data isolation from the physical device. The system is compatible with many wallets and is fully open-source, giving developers and affiliates access to expandable features.

Title

Keycard: Open-Source Air-Gapped Crypto Hardware Wallet

Description

Secure your crypto with Keycard hardware. Air-gapped, contactless NFC, and open-source. Use Keycard Shell for modular cold storage and Keycard for everyday access.

Keywords

keycard, open, shell, hardware, wallet, source, wallets, keys, design, security, card, start, guide, help, founder, update, language

Categories

Technology

NS Lookup

A 23.227.38.65

Dates

Created 2026-03-14

Updated 2026-03-30

Summarized 2026-03-31