Cannot view photo metadata when logged out

i noticed that when i’m logged in, if i click the information icon at the bottom of a photo in the web version of the observation detail, i’m directed to a page where i can see things like camera model, height, width, etc., even for photos that aren’t mine. but when i’m logged out, the page doesn’t show me any of that extra information about the photo.

it’s not a big deal, but i’m just curious if anyone knows why there’s a difference in behavior?