In some way this archive, this anthropological study traces the liminal nature of the intercom itself. From commercial offices, private apartments to social housing blocks, the intercom is a gatekeeper, marking the threshold, the space between outer and inner-worlds. As a photograph, the intercom becomes a stand-in, a surrogate for the building and it’s occupants. Some, such as the more corporate looking device offer few clues to what lies behind. Carlos Arroyo - Arquitectos / Architects. Ilgucha.