And I wonder if any state is really required for PhotoReading itself?

As the supra-mind already records everything, only later in life do we think to pay attention to a automated or natural process.

On the flip side, I do think much is required to activate, use or take advantage of the fact that all this data is holographically stored within.

In arcane mysticism it is put forward again and again that there is a collective Earth Consciousness which also has recorded all that has ever transpired in, upon or heavens around earth.

Consider, they teach 'activation' or accessing this information via the disciplined meditative life. Where geniuses of olden times each found their own way to access some of this and poured it forth in music, mathematics, science or even the art of war...