# Tracker Mappings

The Tracker Mappings contains describes how the HMD and tracking devices are positioned relative to the avatar's skeletal mesh.

Open the tracker mappings asset and set the hand/body bone mappings.

<figure><img src="https://lh7-us.googleusercontent.com/rhx1r61VHloMz7hyi6th2QvR6DlSRud4AjtOJw2ahvzIyxoyX7nve9tLEHx8-rHSYVkNvRvtsK6txQponXwQJSIaKDZiSVC8N1ZJ4WA84aPJwEQYUU3ZrUb_909hUwxGsQZzGfBZGhM9hxWt5_EmFA" alt=""><figcaption></figcaption></figure>

Select the HMD mesh and position it in front of the skeletal mesh face. This will automatically set the HMD Offset property. If the HMD mesh is not visible, check inside the skeletal mesh head or switch to wireframe mode (ALT + 2).

<figure><img src="https://lh7-us.googleusercontent.com/7AkzuzuqOGtcaSoY6_gsuH8Sh02bqAksYIgVPuUhQGHY5_76UbGC6tMLwio900IvdFQCn9o-ysQ4ShhEt-W0szHRrOsF0W84aVEe9itH3Xi3IWofN20T0GiyaZoSIp1Jebezbye1TUDaYn6CWmSmCw" alt=""><figcaption></figcaption></figure>

Select the device mesh name which represents the trackers you are using. If the tracker meshes do not appear check inside the skeletal mesh or switch to wireframe mode (ALT + 2).

<figure><img src="https://lh7-us.googleusercontent.com/dNNrRnPhWsfB5XQ17uAOexsQYLwq_ETUE5paKPWLnsh6-aPbKJs61AfXViTxD5fB80dcyTbOxMdIVcpt1evB9mmj3_raJGbM1Ft7f7rCtQQDiHjhEXj91lyn5YN4i5CmKIuPQofLPtWAMsTkGuEbQQ" alt=""><figcaption></figcaption></figure>

Select one tracker mesh at the time and position them to be where the user would wear the real trackers.

<figure><img src="https://lh7-us.googleusercontent.com/g02nfNXKNVC57SF_ph0uMbsJCOFDo0mzQCQnYXlghMEcxWtMh6zLJ4FeOnS0PcanaldQqj3BvxEk_Uw_A9k22XJJwZqd_iorWxkDei6pGAYM5MI2OpVxgqkIGxjKAvR56oqgrASUR_dKQS3NkUIyaQ" alt=""><figcaption></figcaption></figure>

Pay particular attention to the roll of the trackers as this will affect the direction the hand/foot will be pointing.

<figure><img src="https://lh7-us.googleusercontent.com/5kSEvy31KtTTocbi6HvqYoBv0T9bAdg8zDsg99lat1VH3ldVvYIK4te7GuoWW1yYqyXG_S57YobwsLQdj6yczTmI0M-FkPR04WfEdPFL_7X84kt22fsE0sc7OBsM895C4rBhfXTjZ0WQME2EIggSDw" alt=""><figcaption></figcaption></figure>


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