Physical existence would be everything that exists in the physical world such as the stone in my garden while the informational existence would be the consciousness and qualia (I don't really know how to relate those two one to each other). My consciousness obviously exists : when I feel pain the pain exists, when I close my eyes and imagine the red color the red qualia exists during the time I think of it and more generally my consciousness exist. We can't say it doesn't exist but we can't say that it exists the same way as the stone in my garden either. It seems that informational existence is generated by physically existing systems that are functioning and have their own internal logic such as the brain. This internal logic must have something very specific to generate informational existence such as consciousness.
So is this distinction relevant, do we have some deeper elaboration on this distinction ? Maybe every physical system is generating some kind of informational existence that is very different from consciousness but that is "existing somwhere" just like consciounsess.