# 2. Enhanced Touch Polling
Part of [[Mobile Input and Touch]]. Prev: [[1. Touch Schemes on the Existing Input System]]. Next: [[3. On-Screen Stick and Isolated Actions]].
On-screen sticks (part 3) are the right tool when you want a virtual gamepad. When you want to **inspect contacts** - a drag-to-pan surface, a debug overlay, a "how many fingers are down" test - use the official **Enhanced Touch** polling API. This is not a second player controller. Do not drive `Move` from both a stick and `Touch.activeTouches` at once.
## 2.1 Enable it explicitly
Official 1.20.1 [touch polling](https://docs.unity3d.com/Packages/
[email protected]/manual/touch-polling.html) manual: Enhanced Touch records contacts as they happen and has a cost, so it is **off** until you call `EnhancedTouchSupport.Enable()`. You do **not** need to enable it to use `Touchscreen` as a device, or to use Actions. You **do** need it to use `UnityEngine.InputSystem.EnhancedTouch.Touch`.
`Enable()` / `Disable()` balance: if `Enable` is called twice, it takes two `Disable` calls to turn the system off. Pair them with a component's `OnEnable` / `OnDisable` so a disabled debug overlay does not leave the extra work running.
Official warning, same page, easy to ignore: **do not poll `Touchscreen` state directly inside `Update` or `FixedUpdate` if you meant this API.** You can miss short-lived contacts that begin and end inside one Input System update. That is why Enhanced Touch exists.
```csharp
using UnityEngine;
using UnityEngine.InputSystem.EnhancedTouch;
using Touch = UnityEngine.InputSystem.EnhancedTouch.Touch;
using TouchPhase = UnityEngine.InputSystem.TouchPhase;
/// <summary>
/// Debug overlay for active touches. NOT compiled in Unity; not play-tested on a device.
/// </summary>
public sealed class TouchDebugOverlay : MonoBehaviour
{
void OnEnable() => EnhancedTouchSupport.Enable();
void OnDisable() => EnhancedTouchSupport.Disable();
void Update()
{
foreach (var touch in Touch.activeTouches)
{
switch (touch.phase)
{
case TouchPhase.Began:
Debug.Log(