> ## Documentation Index
> Fetch the complete documentation index at: https://devzone.nayax.com/llms.txt
> Use this file to discover all available pages before exploring further.

# displayQR

The `displayQR` method displays a QR code on the terminal's screen. It supports optional titles, subtitles, and a cancel button. The QR code must belong to a predefined domain.

## Request

<Note>
  **JSON-RPC 2.0**

  All methods in TweezerComm follow a JSON-RPC 2.0 structure. See [Get Started](/docs/integrate-pos-device/tweezercomm/tweezercomm-get-started) for more details on how the requests are structured and sent.
</Note>

To invoke this method, set the `method` field to `displayQR`, and include the service name and parameters as shown below.

```json theme={null}
{
    "jsonrpc": "2.0",
    "method": "displayQR",
    "params": [
        "device",
        {
            "title": "displayQRtitle",
            "subtitle": "displayQRSubtitle",
            "isCancellable": false,
            "urlData": "https://stackoverflow.com",
            "timeout": 60
        }
    ],
    "id": "32323453"
}
```

### Request Parameters

The table below describes the parameters of the request:

| Name            | Type      | Description                                          |
| --------------- | --------- | ---------------------------------------------------- |
| `title`         | `string`  | Title text to be shown above the QR code             |
| `subtitle`      | `string`  | Subtitle text below the title                        |
| `isCancellable` | `boolean` | Whether a cancel button is displayed (default: true) |
| `urlData`       | `string`  | URL encoded as the QR code (**mandatory**)           |
| `timeout`       | `integer` | Display timeout in seconds (default: 30)             |

## Response

A successful request will return the following response:

```json theme={null}
{
    "jsonrpc": "2.0",
    "id": "1",
    "result": {
        "statusCode": 0,
        "statusMessage": "ok"
    }
}
```

### Response Parameters

The table below describes the response parameters for this method:

| Name            | Type      | Description                         |
| --------------- | --------- | ----------------------------------- |
| `statusCode`    | `integer` | Operation status (0 = success)      |
| `statusMessage` | `string`  | Message indicating operation result |