A closed-circuit video device enables two people, sitting back to back,
to communicate while each looks at the other's face as it appears on the
TV set in front of him and listens to his voice coming from a
microphone. Nearby but in another room, two other televisions, with the
same images of the two people as they talk, are placed opposite each
other and dialogue with each other.
The installation took place from September 26 to 28.