Can I make photo prints at greater than 300ppi?

I think the answer might be an ipad

nothing better than photopaper and darkroom

Having spent more than thirty five years using darkrooms to produce my images, I am more that happy to come in to the light. The reference to the ipad was in response to being able to have portable images and at the same time be able to 'marvel' at their fine detail. Seems to me you can now put your life's work in your handbag. In detail.