Keycard Shell

Keycard Shell

Light design, heavy security - an open hardware wallet

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Keycard Shell is an open-source crypto hardware wallet, compatible with 10+ major software wallets. It uses smart cards (the same technology as credit cards) as secure key storage and signing device (EAL6+). It also features a duress pin, replaceable battery.
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Launch tags:Open Source•Hardware•GitHub
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Philipp
Maker
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Hey PH! I’m Philipp, from Keycard. We built Shell as a more transparent alternative, with nimble security trade-offs. Shell is 100% open-source - from chip firmware to CAD files. You can even print your own case: https://x.com/vpavlin/status/190... Unlike with other hardware wallets, with Shell, private keys never leave the immutable, temper-resistant EAL6+ secure chip - even during signing. So you can carry or back up unlimited cards, and use web3 (ETH, EVM & Bitcoin) with camera, without ever plugging in. For a behind-the-scenes look at how we went from sketch to prototype, check out our design journey: https://keycard.tech/blog/keycar... And if you want the full rundown on what makes Shell radically open and uniquely secure, here’s our deep dive: https://keycard.tech/blog/keycar... I’d love to hear your thoughts, feedback, or questionsm