Keycard
Keycard
The open source card-shaped hardware wallet with an EAL6+ secure element. No battery, always ready to sign with Shell, your mobile or your computer.
Lightweight design, heavyweight security
Best-in-class chip
Certified EAL6+ Common Criteria — among the highest levels ever awarded to a secure element, the same class banks rely on.
Non-extractable keys
Private keys never leave the secure element — hashes go in, signatures come out.
Counterfeit protected
Our open-source protocol allows any wallet using the Keycard to check it's genuine and not counterfeited.
Fully open source
Open-source code on an open framework, making it the most open way to design a secure element.
View on GithubResistant, and built to last 20+ years
No battery
Nothing to charge and nothing to wear out. No battery is why a Keycard still works in 20 years.
Resistant
Resists high (50°) and low (-35°) temperatures, dust and X-rays.
Discreet and light
Carry Keycard in your wallet, no one will notice you hold crypto.
Water resistant
Resistant to most everyday spills, give it a wipe and you’re good to go.
Tap. Sign. Done.
Keycard turns your phone into a signing device. No cables, no charging.
Open your wallet app
Use Status on iOS or Android, or any NFC-compatible wallet.
Hold Keycard to your phone
The NFC antenna in the card communicates directly with your phone. No pairing required.
Transaction signed
The card performs all cryptography on its secure element. Your phone never sees your private keys.
No cables. No charging. No Bluetooth. Your Keycard is always ready.
Use your Keycard with compatible wallets
Mobile
Tap your Keycard to sign transactions on iOS and Android. Send, swap, bridge, all secured by your card.
Learn more
Sparrow
Bitcoin wallet with full Keycard support via USB Desktop Reader. PSBT signing, multisig, and coin control.
Learn moreTo use your Keycard with a desktop wallet, all you need is a USB card reader. If you are looking for one, we sell the Keycard USB reader.
Characteristics
Key features
Tap to sign on mobile
Sign on desktop with a card reader
EAL6+ certified secure element
No battery, no charging
Pocket-proof
20+ year lifespan
Frequently asked questions
Yes. Keycard works standalone with NFC-enabled smartphones via the Status app on iOS and Android, or with the USB Desktop Reader on desktop. The Shell is optional and adds air-gapped signing and a dedicated screen.
As many as you want. For instance, one for daily use, one at home, one offsite with a trusted person. At €25 each, the cost of redundancy is trivial compared to what you're securing. Backups follow the BIP-39 standard — you can restore them in any compatible wallet, not just ours.
If you have a backup Keycard with the same keys, you can continue using it immediately. If you've lost all copies, your seed phrase is your recovery path.
Both are card-shaped hardware wallets, but the architecture is different. Keycard is fully open-source, uses a JCOP4 EAL6+ secure element, and is designed as part of a modular system with the Shell. Tangem relies on a proprietary companion app. Keycard uses open standards.
Yes. During setup, you can either generate a new seed phrase on the card or import an existing BIP-39 seed phrase.
The Keycard applet and firmware are MIT-licensed, and the hardware design is published under CERN-OHL-S v2. All of it is public on GitHub. Anyone can audit the code, build it, and verify what runs on the card.
Shipping is free and takes 7 days. Returns: yes, 30 days after delivery. As with any security product, the packaging must be unopened for a return to be accepted.
Nothing about your wallet depends on us. Your keys follow the BIP-39 standard, so any compatible wallet can restore them. Keycard signs through independent wallets such as Status and Sparrow, with no Keycard account or server in the loop. The applet, the firmware and the schematics are open-source public goods anyone can maintain. If we vanished tomorrow, your setup would keep working.
The chip that holds your keys is a secure element, the same tamper-resistant class of chip used in bank cards and passports. EAL6+ is its Common Criteria certification, among the highest levels ever awarded to a secure element. In plain terms: your keys sit in hardware built to resist physical and software attacks. Hashes go in, signatures come out, and the keys never leave.
