---
name: "SDL_TouchID"
section: "3type"
platform: "linux"
package: "libsdl3-doc"
version: "3.2.10+ds-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SDL_TouchID"
---

# SDL\_TouchID(3type)

A unique ID for a touch device.

## NAME

SDL\_TouchID - A unique ID for a touch device.

## HEADER FILE

Defined in SDL3/SDL\_touch.h

## SYNOPSIS

```
#include "SDL3/SDL.h"
```

**typedef Uint64 SDL\_TouchID;**

## DESCRIPTION

This ID is valid for the time the device is connected to the system, and is never reused for the lifetime of the application.

The value 0 is an invalid ID.

## AVAILABILITY

This datatype is available since SDL 3.2.0.