Board Thread:Theories and Speculation/@comment-28939725-20161201164545/@comment-734582-20161202150305

Kakashisologod wrote: And kakashi was enchaned by SP chakra That is actually not important.

What Obito did to Kakashi is similar to how Edo Tensei work. If a spirit possesses a body, that body gains access to the spirit's powers. Now Edo Tensei has a few other things going on since it works forcefully. Obito however, could apparently do it voluntarily (probably because of his Six Paths power).