Zone 7 makes up the outer ring of the Heart, extending to the wall marking the boundaries of the city. For the most part, this area houses the least productive members of society, and as a result, has devolved into a slum.
Surveillance isn't utilized here to the same extent as it is closer to the center of the capital, however, there are larger numbers of Enforcers present to guard the four gates leading Outside. These gates are highly militarized and can only be passed with special clearance from a senior member of the State.
Detention centers can also be found in Zone 7. Criminals and those who fail their work placement exam are sent here for re-education with the intent of transforming them into productive members of society upon release.