# Needle

{% 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="/files/m3T29moapmCR8ATKuzIP" alt=""><figcaption><p>Needle example</p></figcaption></figure>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://posetracker.gitbook.io/posetracker-api/use-posetracker-on-real-time-camera-webcam/query-params-details/exercise-optional/needle.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.