Maybe in a part of someone's profile, you could see their signature, like for example if you wanted the same signature as them. Like Peter's Computer or stuff like that. I don't know, I just thought it might be quite helpful

 

Under the 'information' section on people's profiles, you can view their signature. If that's what you mean.

 

Just click on "information" on someone's profile.

 

I mean like the URL to a photo or video?

 

If you click someone profile and go to "Information" and scroll down it's there.
Or you can just check by going to one of their posts.

 

Information tab on a profile.