ABSTRACT Looking at new public-space formations today, the roles of new technologies grow not only prominent but also noticeably time-sensitive. Due in part to the rapidly changing nature of communications media and the diverse stakeholders, the theatrical “entr'acte” appears to be an apt model for forms and durations of public space with diverse performers (both human and material elements) of different sorts: entr'acteurs. How is public space as physical construct changing with new embedded forms of computing? How is a public formed? What new material sensibilities emerge? And what role does their essentially fleeting or transitional character play?