> For the complete documentation index, see [llms.txt](https://posetracker.gitbook.io/posetracker-api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://posetracker.gitbook.io/posetracker-api/use-posetracker-on-real-time-camera-webcam/query-params-details/exercise-optional/needle.md).

# Needle

https\://app.posetracker.com/pose\_tracker/tracking?exercise=split\&token=API\_KEY

{% hint style="warning" %}
This is a **legacy exercise**.

It is **not part of the current V3 exercise list**.

New integrations should not use it.

Use the V3 list instead:

* [Exercises (V3 list)](/posetracker-api/posetracker-api-query-parameters.md#exercises-v3-list)
  {% endhint %}

Parameter to set in the URL :

```
exercise=split
```

Placement requirements :

* The user must face his left or right profile to the camera

<figure><img src="https://2260623413-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FVN2exBTzCYvSfEZLPE2d%2Fuploads%2FP85aLZGe8zJ5q9MexAez%2Fpexels-bohlemedia-963697.jpg?alt=media&amp;token=f23c8596-e4e0-4700-96e9-f8c06435f512" alt=""><figcaption><p>Needle example</p></figcaption></figure>