Hub

The Hub is a section of Aperture Science that is featured exclusively during the Cooperative Testing Initiative. Through the Computer Intelligence Training and Enrichment Center Human Test Subject Research Center, or CinTech (pronounced Sin-Tech), Atlas and P-Body can access the various test chambers that are featured throughout the coop campaign.

It features a large screen that displays the total steps players have taken since starting co-op, as well as total portals fired and other statistics. Additionally, it has Aerial Faith Plates, Hard Light Bridges, and Panels that allow for easy traversal of the chamber.