# webln.signMessage()
Request that the user signs an arbitrary string message.
Signed messages can either be verified server-side using the LND RPC method, or by clients with [webln.verifyMessage](https://webln.dev/#/api/verify-message).
#### Method
```typescript
async function signMessage(message: string): SignMessageResponse;
```
#### Response
```typescript
interface SignMessageResponse {
message: string;
signature: string;
}
```
#### Code Example
```typescript
await webln.enable();
await webln.signMessage("Sample message");
```
#### Demo
{% embed url="" %}
**Example in the wild**
uses `webln.signMessage()`for login. Users sign a message and prove ownership of a lightning node.
