https://www.bleepingcomputer.com/news/microsoft/microsoft-brings-ios-spacebar-cursor-control-to-windows-10/

Microsoft is bringing a popular Apple iOS feature to Windows 10 that allows you to control your cursor by pressing and holding the spacebar while moving your finger.

Since iOS 12, you can hold and press the spacebar and then move your finger around to control the text input cursor, as shown in the video below.