Universal Control: How to link your Mac and iPad and use the same keyboard and mouse

macOS 12.3 and iPadOS 15.4 have been released and at long last Apple added Universal Control, the much-anticipated feature that was revealed at WWDC 2021. Late last year, Apple announced that the release of Universal Control would be delayed to this spring, and now it’s finally here. For the uninitiated, Universal Control allows you to use an iPad as a companion display for a Mac that can be controlled with the same keyboard and mouse. During the demo in the WWDC keynote, Apple