Fidus Key builds hardware wallets that keep your private keys completely offline — protected by a secure chip and signed by you, on the device. Simple setup, bulletproof recovery, and full support for Bitcoin and the major cryptocurrencies.
Your keys are generated inside the device, stored on a secure element, and never leave it. Transactions are signed offline and only the signed result is broadcast — so even a compromised computer can't reach your funds.
Every Fidus Key wallet carries a certified secure element that resists physical tampering, side-channel attacks and firmware replacement attempts.
Private keys are generated and held on the device itself. Signing happens on the wallet, never on your phone or computer.
Back up your wallet with a standard recovery phrase, restore to any compatible device, and recover your funds even if the hardware is lost or damaged.
From a pocket-sized everyday wallet to a stainless backup of your recovery phrase, Fidus Key covers every layer of self-custody.
Fidus Key was designed for people who want institutional-grade protection without a manual.
Connect the device, choose a PIN, and write down your recovery phrase. The device generates your keys locally — nothing leaves the wallet.
Pair with our free companion app, pick your asset, and confirm the receiving address directly on the device screen.
Review every transaction on the device, approve with the PIN, and broadcast. Your keys never touch the network.
Straight answers to the questions we hear most. More on our FAQs page.
A hardware wallet is a physical device that stores your private keys offline. Because the keys never touch an internet-connected computer or phone, they cannot be stolen by malware, phishing sites or exchange hacks. If you hold more crypto than you would carry in cash, a hardware wallet is the safest way to keep it.
Fidus One and Mini support Bitcoin and over 40 major cryptocurrencies and tokens, including Ethereum, Solana, Cardano, Dogecoin and popular stablecoins. New assets are added through free firmware updates.
Your recovery phrase is your wallet. Restore it on any compatible device — including another Fidus Key wallet — and your funds are accessible again. This is why we ship Fidus Steel with every order of two or more devices.
Yes. Fidus Key works with our free companion app as well as popular third-party desktop and mobile wallet interfaces through standard connection methods, so you are never locked in.
Free shipping on orders over $100. 30-day returns. 2-year warranty on every device.
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