The Ideal Option : Sidecar on macOS Catalina Sidecar is arg | Life Hacker

The Ideal Option :

Sidecar on macOS Catalina

Sidecar is arguably the best option for turning your iPad into a second display. So if you have a Mac and an iPad from the past three or four years, you'll want to try it first.

(If your devices are older than that, skip down to the next section.)

To connect your iPad as a display, either connect your iPad to your Mac over USB, or—to do it wirelessly—ensure Bluetooth, Wi-Fi, and Handoff are turned on. You'll also need to be logged in to the same Apple ID on both devices

Then, click the AirPlay button in your Mac's menu bar and select your iPad from the list. The icon will change, and clicking the menu again will offer you a number of options. You can mirror your Mac's display or extend it, show or hide the Sidebar and Touch Bar that appear on the iPad, or disconnect your tablet.

You can use Sidecar wired or wirelessly, but if you want to switch between them, you have to disconnect and re-connect using the AirPlay menu. Apple says it should work wirelessly as long as the iPad is within 10 meters (30 feet) of the Mac, and you can even use your Apple Pencil to sign documents and draw in supported apps.