Board Thread:Naruto Discussions/@comment-4912646-20141016191738/@comment-25387973-20141020112620

Being a jinchuriki should imply having its consciousness and body sealed within you.Consciousness meaning you can mentally interact with the beast.All known jinchurikis have done this.

There must be a sealing technique involved unless that person can't be a jinchuriki.Kinkaku,Jinkaku,Alliance - there were no sealing techniques involved they can't be Jinchuriki.Tailed beast share both body and mind of the jinchuriki.I personally believe the tailed beast is sealed inside the mind(spirit) but can manifest physically as part of that individual.