I've read several articles about customizing the home screen icon used by IOS (and some Android) phones/tablets for the "add to homescreen" option. I'm seeing different recommendations re: sizes of the pngs, number of pngs, and am not clear where I should upload it/them.
Here's a sample of articles; some WP specific, some not: http://www.bryanhauer.com/2012/06/25/how-to-easily-create-iphone-ipad-home-screen-retina-icons-for-your-website/
I like the idea of using one "large" icon and having the devices scale it, but does that work? If so, does it really need to be 512 x 512? That seems pretty big and large pngs are large files.
And where do I place the pngs? In the theme root? In the media library? In the images folder in the theme root?
Do I need to add anything to the code like <*img src="/*images/apple-touch-icon.png">
Has anyone done this for a Wordpress theme?