# Node-based Tracking Workflows

In order to use the values we received through the **Tracking receiver** devices in the *Devices* window, we need to create a **Read** node in one of the layers. So open a layout of one of the layers (by double clicking on it), right-click on a *Layer* window and choose a specific *Layer* reader node.

<div align="left"><img src="https://3312042618-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9sVaJpWJhPbmscipukhh%2Fuploads%2Fgit-blob-972d9a4788c6798a152b9584e90f9c9f50d8f81d%2FTracker%20layer%20nodes%20menu.png?alt=media" alt=""></div>

Every tracking technology is a bit different and the data they provide differs too. However, all of them provide at least *Position and Orientation*.

<div align="left"><figure><img src="https://3312042618-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9sVaJpWJhPbmscipukhh%2Fuploads%2FOgtSOfMGOLIu88oQoEJE%2Fimage.png?alt=media&#x26;token=d58af6ed-f303-4759-9da8-4242f20d7fe9" alt=""><figcaption></figcaption></figure></div>

Therefore, you can always use **Read Tracker** node which works with all tracking technologies.

## Nodes for specific tracking technologies

As most tracking technologies include specific type of format of data, each of these technologies usually have a corresponding layout node that works only with that technology.&#x20;

In the subsequent pages we will go through some of them.