api-docs/docs/browser-tracker/markdown/browser-tracker.activitycallbackdata.md
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[Home](./index.md) > [@snowplow/browser-tracker](./browser-tracker.md) > [ActivityCallbackData](./browser-tracker.activitycallbackdata.md)
## ActivityCallbackData type
The data which is passed to the Activity Tracking callback
<b>Signature:</b>
```typescript
type ActivityCallbackData = {
context: Array<SelfDescribingJson>;
pageViewId: string;
minXOffset: number;
minYOffset: number;
maxXOffset: number;
maxYOffset: number;
};
```