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Do you really think that Apple couldn’t come up with the idea for SideCar without Luna? You could already use AirPlay to create a second monitor from your Mac and use AirPlay as a second display from iOS. It was completely logical that the next step is to send video from your Mac to your iPad as a second display.

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Indeed, Apple had already implemented something similar with Target Display Mode on the iMac back in 2009, so it's hardly a stretch to figure they've been planning something like this for essentially as long as iPads have been around.

And air display was around shortly after the iPad was launched, yes including touch-mouse features.

For me, the novelty quickly wore off. Amazing how long Apple took to replicate THIS VERY OBVIOUS FEATURE.

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