In ''Playpen'', a pre-recorded video of females aged from 6 months to 80 years was juxtaposed with Tina Keane sitting in a child's playpen.
A camera is placed so as to pick up this scene for relay into a second monitor. Through a mirror device she was able to interfere with the camera''s angle of vision, feeding into the monitor the reflection of the viewer who becomes both observer and observed.