Universal Control: One Keyboard for Mac and iPad

Universal Control is the Continuity feature that feels most like a magic trick: push your Mac's cursor off the edge of the screen and it appears on your iPad — or a second Mac — with your keyboard following wherever the pointer goes. No cables, no app, no clicking "connect". The iPad stays fully an iPad; you're just driving it with better tools.

What it is (and isn't)

Universal Control shares your Mac's input devices — mouse, trackpad, keyboard — with up to two other nearby devices. Each device keeps running its own apps on its own screen: the iPad shows iPadOS, the second Mac shows its own desktop. That's the difference from Sidecar, which instead turns the iPad's screen into an extra display for the Mac. Same hardware, opposite ideas: Sidecar extends your Mac; Universal Control extends your keyboard.

Requirements

• Both devices signed into the same Apple ID with two-factor authentication.
• Bluetooth, Wi-Fi, and Handoff on, devices within about ten metres (or the iPad connected by USB).
• Reasonably recent hardware — broadly, Macs from 2016 onward and iPads from the last several years. Any Mac running Ventura or later qualifies except the very earliest supported models; if in doubt, just try it.
• The iPad can't be sharing its cellular connection, and the Mac can't be sharing internet.

Turn it on and link up

1. On the Mac: System Settings → Displays → Advanced…, and enable Allow your pointer and keyboard to move between any nearby Mac or iPad. The two sub-options below it — pushing through the edge to connect, and automatic reconnection — are what make linking effortless; leave them on.
2. On the iPad: Settings → General → AirPlay & Handoff → turn on Cursor and Keyboard.
3. Place the iPad near the Mac, both awake and unlocked.
4. Push the Mac's cursor firmly past the screen edge nearest the iPad. A small bulge animates at the iPad's edge; keep pushing and the cursor pops onto the iPad as a round iPadOS pointer.

Type now and keystrokes land on whichever screen holds the cursor. To undo the whole feature, flip the same switches off — nothing else changes.

Arrange the layout and actually use it

macOS guesses which side the iPad sits on; fix its guess in System Settings → Displays, where the iPad appears as a screen you can drag to the correct side of your Mac's display, exactly like arranging monitors. A good layout matters — you'll cross that border hundreds of times.

What works across the border:

• Typing and shortcuts: the full keyboard, including ⌘-shortcuts, works in iPad apps. Trackpad gestures translate to iPadOS gestures.
• Drag and drop: drag a photo from the iPad's Photos app straight into a Keynote deck on the Mac, or drop a file from the Mac into a waiting app on the iPad. The receiving side must be an app that accepts the content — on the iPad, drop files into Files, images into Photos or a document; you can't drop onto the iPad Home Screen.
• Mac-to-Mac: between two Macs, Finder-to-Finder drag copies files directly — the quietly excellent way to move a file to the laptop sitting next to you.

If linking ever fails, the fix list is the standard Continuity one: confirm the same Apple ID, cycle Bluetooth and Handoff on both devices, and make sure neither device is asleep. Linked devices also show in the Screen Mirroring section of Control Center, where you can connect manually instead of edge-pushing. One Mac can drive up to two other devices at once — a Mac plus an iPad flanking your main screen is a legitimate three-device cockpit, all on one keyboard.