# Identify your devices

To help you identify, search, and filter devices in your Cobrowse dashboard, it's helpful to specify any meaningful metadata.

You may add any custom key/value pairs you'd like, and they will all be searchable and filterable in your online dashboard. We've added a few placeholders for convenience only - all fields are optional.

{% tabs %}
{% tab title="Web" %}

```javascript
CobrowseIO.customData = {
    user_id: "<your_user_id>",
    user_name: "<your_user_name>",
    user_email: "<your_user_email>",
    device_id: "<your_device_id>",
    device_name: "<your_device_name>"
};
```

{% endtab %}

{% tab title="iOS / MacOS" %}
**Swift**

```swift
CobrowseIO.instance().customData = [
    CBIOUserIdKey: "<your_user_id>",
    CBIOUserNameKey: "<your_user_name>",
    CBIOUserEmailKey: "<your_user_email>",
    CBIODeviceIdKey: "<your_device_id>",
    CBIODeviceNameKey: "<your_device_name>"
]
```

**Objective-C**

```objectivec
CobrowseIO.instance.customData = @{
    CBIOUserIdKey: @"<your_user_id>",
    CBIOUserNameKey: @"<your_user_name>",
    CBIOUserEmailKey: @"<your_user_email>",
    CBIODeviceIdKey: @"<your_device_id>",
    CBIODeviceNameKey: @"<your_device_name>"
};
```

{% endtab %}

{% tab title="Android" %}

```java
HashMap<String, String> customData = new HashMap<>();
customData.put("user_id", "<your_user_id>");
customData.put("user_name", "<your_user_name>");
customData.put("user_email", "<your_user_email>");
customData.put("device_id", "<your_device_id>");
customData.put("device_name", "<your_device_name>");
CobrowseIO.instance().customData(customData);
```

{% endtab %}

{% tab title="React Native" %}

```javascript
CobrowseIO.customData = {
    user_id: "<your_user_id>",
    user_name: "<your_user_name>",
    user_email: "<your_user_email>",
    device_id: "<your_device_id>",
    device_name: "<your_device_name>"
};
```

{% endtab %}

{% tab title="Flutter" %}

```dart
CobrowseIO.instance.setCustomData(<String, String>{
    'user_id': '<your_user_id>',
    'user_name': '<your_user_name>',
    'user_email': '<your_user_email>',
    'device_id': '<your_device_id>',
    'device_name': '<your_device_name>'
});
```

{% endtab %}

{% tab title=".NET Mobile" %}

```csharp
CobrowseIO.Instance.CustomData = new Dictionary<string, string>
{
    { CobrowseIO.UserIdKey, "<your_user_id>" },
    { CobrowseIO.UserNameKey, "<your_user_name>" },
    { CobrowseIO.UserEmailKey, "<your_user_email>" },
    { CobrowseIO.DeviceIdKey, "<your_device_id>" },
    { CobrowseIO.DeviceNameKey, "<your_device_name>" }
};
```

{% endtab %}

{% tab title="Windows" %}

```csharp
CobrowseIO.Instance.CustomData = new Dictionary<string, object>()
{
    { CobrowseIO.UserIdKey, "<your_user_id>" },
    { CobrowseIO.UserNameKey, "<your_user_name>" },
    { CobrowseIO.UserEmailKey, "<your_user_email>" },
    { CobrowseIO.DeviceIdKey, "<your_device_id>" },
    { CobrowseIO.DeviceNameKey, "<your_device_name>" }
};
```

{% endtab %}
{% endtabs %}