Hardware wallet
A hardware wallet is a physical device, such as a Ledger, that stores the private keys for your crypto. It lets you approve transactions without your private keys ever leaving the device.
What is a hardware wallet?
A private key is a secret code that lets you move your crypto. The crypto itself isn’t stored on the device. Your balance is recorded on the blockchain, a digital record of transactions.
You usually use an app on your computer or phone to prepare a transaction. After you approve it, the hardware wallet signs it internally. The app then sends the transaction to the network.
When you set up the wallet, you’ll often receive secret recovery words. These let you restore your wallet if the device breaks or gets lost. Keep these words secret: anyone who has them can usually move your crypto.
An example of a hardware wallet
You want to send 0.01 bitcoin. In the wallet app for a device such as your Ledger, you enter the recipient’s address and the amount. Then you check these details on your hardware wallet’s screen and confirm them.
The device signs the transaction. The app then sends the signed transaction to the Bitcoin network. Your private key stays on the device.
Why is a hardware wallet important in crypto?
A hardware wallet is used for self-custody: you manage your own keys instead of leaving them entirely with a crypto exchange. Because the keys are kept separate from your computer or phone, it’s harder for malware on those devices to steal them.
That’s why the term often comes up in news about theft, security, and problems at crypto platforms. Stories about vulnerabilities or tampered wallet devices may also cover this topic.
A hardware wallet doesn’t guarantee complete security. You can still approve a malicious transaction. Phishing can also get around the protection if you enter your recovery words on a fake website. Losing the device usually isn’t fatal if you have the right recovery information, but without the device and the recovery information, recovery may be impossible.
