Resolution (ppi) of artwork for iPad

So far I've always prepared my artwork for iPad at 72 ppi.
But on Wikipedia I read:
iPad mini Original 1024×768px
163 ppi
iPad Original, 2
1024×768px
132 ppi
iPad 3rd Gen, 4th Gen
2048×1536px
264 ppi
Does this imply I need to set ppi in Photoshop to 163ppi for iPad mini? And 264ppi for iPad 3/4?
And do I set ppi for iPad mini to 163ppi?

It's simply a hardware specification, typically provided by the display manufacturer so that the OEM's marketing wonks have something to impress the press with.

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