Windows 10 provides visual feedback when you tap your touch screen. By default, after tapping, a transparent circle appears under your finger. How to disable this.
To find this option, navigate to Settings> Easy Access> Cursor and Pointer. (To quickly open the Settings app, press Windows + I.)
Scroll down to the "Change Touch Feedback" section. Tap "Show visual feedback to show the touch points when I touch the screen" and switch to "Off".
To re-enable touch feedback in the future, you can return here and tap the switch again at any time.
If you're holding a presentation and you want to make touch feedback more visible, turn on 'Make Visual Feedback Darker and Higher for Touchpoints' Here. The circles change from light gray to dark gray. They also become bigger and more eye-catching.