Security Camera



The Security Cameras can be seen throughout the Test Chambers within the Aperture Science computer-aided Enrichment Center. Throughout the Portal series, the cameras are used by GLaDOS as a means of monitoring the movements and progress of Test Subjects. It doesn't serve any vital role in-game at least in Portal and Portal 2. In Portal, cameras are referred to as 'vital testing apparatus' if destroyed.

Portal
In test chambers and some parts of maintenance area.

Portal 2
In test chambers and some parts of maintenance area.