Syntercept 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 Syntercept 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, Syntercept covers every layer of self-custody.
Syntercept 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.
From a small workshop on the San Francisco waterfront to 12,000 devices in the field.
Syntercept LLC is founded in San Francisco by a team of embedded-systems and security engineers.
The first prototype ships to 500 testers across 20 countries; their feedback shapes the final firmware.
Syntercept One launches publicly, followed months later by the compact Syntercept Mini.
The 12,000th device ships and our expanded San Francisco support center opens.
Hardware is only half the story. Our US-based team guides individuals, families and businesses from their current setup to true self-custody — with a small test transfer before the real one, every time.
One-on-one sessions that move your coins off exchanges and hot wallets onto Syntercept hardware, step by step, with confirmation on the device at every stage.
Plain-English workshops on phishing, backup hygiene, device care and inheritance planning — live remote sessions or on-site for business clients.
Multi-signature-style workflows, device fleets, access policies and audit trails for companies that hold treasury in crypto.
Questions about a device, an order, or moving to cold storage? We answer within one business day.
Syntercept LLC
1 Market Street, Spear Tower, Suite 3600
San Francisco, CA 94105
United States
Office hours: Mon–Fri, 9:00–18:00 Pacific
General & sales: [email protected]
Support: [email protected]
Phone: +1 (415) 203-8461
We typically respond within one business day.
Straight answers to the questions we hear most. More on our FAQs page.
A hardware wallet is a physical device which holds your private keys in offline storage. Because the keys remain sealed inside the device and are never exposed to a networked machine, they cannot be stolen by malware, fake websites or exchange hacks. If you hold more crypto than you would carry in cash, a hardware wallet is the safest way to keep it.
Syntercept 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 Syntercept wallet — and your funds are accessible again. This is why we ship Syntercept Steel with every order of two or more devices.
Yes. Syntercept 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 qualifying orders. 30-day returns. 2-year warranty on every device.
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