SDL_FingerID - A unique ID for a single finger on a touch device.

       This datatype is available since SDL 3.2.0.

Simple Directmedia Layer                           SDL 3.2.20                                SDL_FingerID(3type)

       This  ID  is  valid  for the time the finger (stylus, etc) is touching and will be unique for all fingers
       currently in contact, so this ID tracks the lifetime  of  a  single  continuous  touch.  This  value  may
       represent an index, a pointer, or some other unique ID, depending on the platform.

       The value 0 is an invalid ID.

       SDL_FingerID - A unique ID for a single finger on a touch device.

#include<SDL3/SDL_touch.h>typedefUint64SDL_FingerID;