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"Did you know we originally used these cameras to capture moments of intense pain and agony in test subjects? If the subject survived the test, we let them purchase the pictures for $5. If the subject died, we gave the photo to their next of kin free of charge. The photos weren't as popular as we had hoped, so we repurposed the cameras."

Security Cameras are used by GLaDOS throughout the test chambers in the Enrichment Center as a way of monitoring the test subjects.


  • Placing a linked portal underneath a camera will cause it to be detached, followed by a warning (only in Portal) from GLaDOS, in which she refers to the camera as a "vital testing apparatus."
  • In Portal 2, GLaDOS revealed that the cameras were originally used to capture moments of intense pain and agony in test subjects, and that these photos could be purchased for 5 dollars if the subject survived, but were given to the next subject for free if the previous one died. However, the cameras were repurposed when GLaDOS realized that the photos weren't popular enough.
  • In Portal, the camera's main lens is a mild orange color with a brown shade in it, and resembles an eye like the cameras found on turrets.
  • The cameras can rotate 360 degrees, and they follow the players' movements within Test Chambers.
  • As well as its main video camera, the security camera also has a sensor on its side.
  • Not a single security camera is featured in any of the maintenance areas or observation rooms of Aperture Laboratories, and it is therefore unknown how, or even if, GLaDOS can monitor Chell's movements during her escape in Portal. Her calls through the Speaker System do not strongly connote that she is able to monitor the escape.

Behind the scenes

  • As seen in an early Portal screenshot, a security camera model from Counter-Strike: Source was used during development as a placeholder to the final model.


  • As seen on, the image of the security camera feed is green, despite its lens being red.
  • In Portal, console-spawned cameras do not look at the player, no matter what.
  • Several detached security cameras can be found in Rattmann Dens, along with the message "She's watching you."
  • An Orange Box Achievement, "Camera Shy," requires the player to detach all security cameras from the walls. This is only possible with security cameras attached on concrete walls (thus disregarding those fixed into metal) and not before the ASHPD has been acquired.
  • One of the unknown Aperture Science employees in Portal 2: Lab Rat states that the cameras, in fact, contain cameras inside them (although this statement may have been a paranoid delusion of Doug).*
  • In Portal, the cameras are "inactive" (looking down) until the player enters the test chamber.
  • In Portal, the camera's heat sensor is on the top, while in Portal 2, it is on the bottom.
  • In Portal 2, test chamber 19, if placed in a certain area the camera's lens turn green.
  • If they can, the cameras will stare at Chell through portals.


List of appearances


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