This is a nice posting regarding fungi which control brains. But, as far as I knew this idea is far too advanced than what we are at now. This would be a great invention. But, in order to control brains of one the fungi must be able to communicate between the master and slave. Such, type of Fungi can be created by using nano technology.
But, here arises the problem how to create such nano particles which are fungi. For this I got a solution, we can create fungi from our old concept generated from the birth of life form. As we know the life forms have been created from potassium and sulphur and we can create such fungi nano particles. But, the behavior we have to study before continuing.