Instead of a one-shot temporary installation, the hackers have designed and built a permanent facility that can be re-used repeatedly by the MIT community. An understanding has been reached with the EAPS Department, which is headquartered in the Green Building, to allow the light display hardware to remain installed in each window. To avoid annoying the occupants and to allow late-working staff to "opt out", each light display is equipped with a manual override button, which will disable the pixel lighting for that window for several hours after it is pressed. In addition, the hackers have released open-source software tools used to develop new display patterns, so that others can design and deploy new stationary or animated images, in cooperation with the hacker engineers.