I though of an idea of a space colony where the leading bodies control the populace through chips in their brains that control their emotional and even their free will. i would have a character have his chip fail through an accident and he wakes up with temporary amnesia. After regaining enough memory, he realizes that if the people will ever be free, he must do something about it. however, no one can be trusted as the chips also allow people to be monitered (through eyes and ears). i just wanted to know if anything like this has been down. and yes it does sound similar to the book Big Brother.