LogIn in Chapter page

My people use to have always the same problem. They do not use to find the login of the site the first days as is just in the home page. Is not possible to have it in any page?.
In the footer in order to not use space in the header maybe.

maybe in the sidebar menu.

Anyway, I think a place where more information can be find it (the metadata about the page) as the login buttom maybe could be nice