What is a hardware wallet?
A small device that keeps your keys offline, so malware on your computer can't steal them.
A hardware wallet is a small device, often like a USB stick, that stores your private keys offline and signs transactions inside the device. Your computer or phone only sees the signed transaction, never the key, which protects you from most malware.
How it works
- The device creates your keys and shows a seed phrase once, on its own screen, for you to write down.
- When you send crypto, your computer prepares the transaction and passes it to the device.
- You check the address and amount on the device's screen and press its button to approve.
- The device signs it and passes back only the signature. The private key never leaves.
Compared with a phone or browser wallet
| Compare | Hardware (cold) wallet | Phone or browser (hot) wallet |
|---|---|---|
| Cost | Usually about $50–$250 | Free |
| Protection from malware | Strong; the key stays on the device | Weaker; the key is on an internet-connected device |
| Convenience | Need the device to send | Send instantly |
| Protects against tricks? | Only if you read the screen before approving | Same |
Buying and setting one up safely
- Buy direct from the manufacturer's official website, or its official store on a major retailer. Avoid second-hand devices.
- Never use a device that arrives with a seed phrase already filled in. A real wallet always makes you create a new one. A pre-written phrase is a scam.
- Write the seed phrase on paper or metal. Never type it into a computer or phone, and never take a photo of it.
- Install the companion app only from the manufacturer's official site.
What it can't protect you from
- If someone gets your seed phrase, they can take everything without touching the device.
- If you approve a malicious transaction or token approval, the device will sign it. Read what you're approving.
- If you lose the device and the seed phrase, the coins are gone.
Frequently asked questions
Do I need a hardware wallet?
Not for small amounts you're experimenting with. Many people get one once their holdings are more than they'd be comfortable losing to a hacked phone or exchange.
What happens if my hardware wallet breaks?
Your coins are safe. Buy a new device (any brand that supports the same standard) and restore it with your seed phrase.
Is a cold wallet the same as a hardware wallet?
A hardware wallet is the most common kind of cold wallet. Any method that keeps keys offline counts as cold storage.
Where to next
Sources
Written for beginners and checked against the sources listed. Last reviewed October 26, 2026. This page is educational and is not financial, tax or legal advice. How we write and check pages.