> ## Documentation Index
> Fetch the complete documentation index at: https://help.bitcoincontrolcenter.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Hardware wallets
> Track Ledger, Trezor, COLDCARD, and Keystone wallets watch-only.
Control Center imports **public** keys (xpubs) only. Your coins stay on your wallet. Nothing can be spent.
## What you need
| Wallet | Connects by | You also need | Address types |
| - | - | - | - |
| **Ledger** | USB | The **Bitcoin** app open. In a browser: Chrome, Brave, or Edge. | Legacy, Nested SegWit, Native SegWit, Taproot |
| **Trezor** | Trezor Suite | Trezor Suite (desktop or web). Pop-ups allowed. | Legacy, Nested SegWit, Native SegWit. No Taproot. |
| **COLDCARD** Mk2, Mk3, Mk4 | MicroSD file | A MicroSD card. USB is not supported. | Legacy, Nested SegWit, Native SegWit |
| **COLDCARD Q** | QR code | A webcam. | Legacy, Nested SegWit, Native SegWit |
| **Keystone** | QR code | A webcam. | Native SegWit |
Other wallet or address type? Use an [xpub or descriptor](https://help.bitcoincontrolcenter.com/accounts/xpub-and-descriptors.md) instead.
> [!WARNING]
>
> Wallet scans only list accounts with a balance above zero. A new or emptied wallet shows "No wallets found". To track it anyway, add it by [xpub or descriptor](https://help.bitcoincontrolcenter.com/accounts/xpub-and-descriptors.md).
## Add a hardware wallet
Every wallet follows the same three stages.
```mermaid theme={null}
flowchart LR
A["1. Connect
read the public key"] --> B["2. Confirm
check name and balance"]
B --> C["3. Prove control
sign one message"]
```
1. Select **Add Account**. Pick your wallet.
Pick your wallet.
2. Follow the steps for your wallet below.
3. Check the account and balance. Select **Yes, Continue**. The account is saved as **pending**.
4. Sign the message on your device. The account becomes **verified**. See [Verify ownership](https://help.bitcoincontrolcenter.com/accounts/verify-ownership.md).
**Ledger**
1. Plug in by USB. Unlock with your PIN. Open the **Bitcoin** app.
2. Select **Next**. In a browser, allow the connection prompt.
3. Control Center scans for accounts. Pick one if it finds several.
Connect your Ledger.
**Names:** accounts are named like Ledger Live, such as "Bitcoin Native Segwit 1". "Segwit" alone means Nested SegWit.
**Scan rule:** Control Center checks account 1 of each address type. It checks account 2 only if account 1 has a balance, and so on. An account after an empty one is not found. Add it by [xpub](https://help.bitcoincontrolcenter.com/accounts/xpub-and-descriptors.md) instead.
> [!NOTE]
>
> On the desktop app, close Ledger Live and other wallet apps first. Only one app can talk to the Ledger at a time.
**Trezor**
1. Plug in. Unlock.
2. Select **Next**. Trezor Suite opens. Allow Control Center to read your device details.
3. Select **Next**. Choose the account in Trezor Suite. Come back to Control Center.
Connect your Trezor.
* Control Center uses Trezor Suite desktop if it is running. Otherwise it opens Trezor Suite Web in a pop-up. Allow pop-ups for Control Center.
* Taproot accounts are not offered. Trezor cannot sign the ownership message for them.
* The confirm screen always says "Account 1". It still uses the account you picked.
**COLDCARD**
1. Pick your model: **MK2/MK3**, **MK4**, or **Q**.
Pick your COLDCARD model.
2. On Mk2–Mk4, choose **By Airgapping**. USB is not supported.
3. On the COLDCARD, go to **Advanced/Tools** → **Export Wallet** → **Generic JSON**. If asked for an account number, choose yours (usually `0`).
4. Upload `coldcard-export.json`. Select **Connect Wallet**.
Export Generic JSON to the MicroSD card.
On **COLDCARD Q**, show the same export as a QR code (press the QR button). Hold the screen up to your webcam.
MicroSD or QR.
> [!TIP]
>
> Delete the export file from your computer when you finish. It holds your public keys.
**Keystone**
1. Select **Next**. Allow camera access when your browser asks.
2. On Keystone, show your wallet's export QR code. Select **Ready to Scan**.
3. Hold the Keystone screen up to your webcam.
Scan the Keystone QR.
Keystone accounts are treated as Native SegWit (`bc1q…`). If the balance looks wrong, add the wallet by [descriptor](https://help.bitcoincontrolcenter.com/accounts/xpub-and-descriptors.md) with the right address type.
## After you add it
The new account syncs. Large wallets take longer.
Syncing a new account.
* Balance looks wrong? See [Troubleshooting](https://help.bitcoincontrolcenter.com/help/troubleshooting.md#balances).
* Stopped before signing? The account stays **pending**. Open it and select **Continue**.
* To rename, archive, or remove it, see [Manage accounts](https://help.bitcoincontrolcenter.com/accounts/manage-accounts.md).
> [!WARNING]
>
> Never type your seed phrase into Control Center. Approve signatures on the device only.
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