"It's sort of a no-brainer. And a fascinating way to think about creating a sustainable source of income to allow, even in part, artists to produce works are genuinely expensive in time and cost to create. It should also prove to artists, and anyone who frets over the illusion of print rights, that they've got nothing to worry about. This stuff is an entirely other material and colour made of light, it turns out, doesn't just magically translate to colour made of pigment the way that, say, a word-processing document does. And if anyone is really going to lose sleep over the people who are already predisposed to print things out on their shitty homes printers my only advice is to give up now. Let them and understand that there are more interesting problems to solve and if projects like 20×200 are any indication there's a whole world of people who want to help with not only their moral support but their wallets." Aaron on the Hockney show, subscription app art, and drawing on iPads.