# Sign with a Single Polkadot Vault Wallet

Using Polkadot Vault in conjunction with Nova Spektr means you will use a mobile device to sign the operation.

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It is important to note that the device which has Polkadot Vault installed on it should be:

1. **Factory Reset to remove any previous data**
2. **Disconnected from the internet**
3. **Set to airplane mode**

If you turn off airplane mode, connect to the internet, or plug in your Polkadot Vault device to a computer that has internet access after setting up your Polkadot Vault you will need to repeat the process of installing and setting up Polkadot Vault.
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Use Nova Spektr for creating operations like [staking](https://docs.novaspektr.io/staking/nominating-start-staking) and [transfer](https://docs.novaspektr.io/operations/operations-signing/broken-reference). When the Single Polkadot Vault wallet type is used Nova Spektr offers to sign the operation with the Polkadot Vault.

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The following steps include actions you must perform on both your **Polkadot Vault Device** and your **Nova Spektr Device**.
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Actions for each device are clearly labelled below.
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1. Click on **Sign with Polkadot Vault** <mark style="background-color:blue;">(Nova Spektr device)</mark>.
2. A **QR code** should now be displayed <mark style="background-color:blue;">(Nova Spektr device)</mark>.
3. Select **Scan** <mark style="background-color:purple;">(Polkadot Vault Device)</mark>.
4. **Scan** the QR code with your <mark style="background-color:purple;">Polkadot Vault Device</mark>.&#x20;
5. Review the transaction details and select **Unlock key and sign** <mark style="background-color:purple;">(Polkadot Vault Device)</mark>.
6. A QR code will now appear on your Polkadot Vault Device. In your Nova Spektr application select **Continue** and then scan this QR code <mark style="background-color:blue;">(Nova Spektr device)</mark>.
7. The Nova Spektr will show the result of submitting the operation.