I would like (on a non-rooted phone) to access /dev/graphics/fb0, read-only is fine. The node is owned by root, user graphics, and the permissions are 660.

Clearly since my phone isn't rooted (or more specifically, phones that I want to run on aren't likely to be rooted), the user permission won't help me.

Is anyone aware of a (sanctioned) way to access things as the "graphics" user?