An interactive installation addressed to one person at the time, filmed with 8 surveillance cameras, in which each visitor was invited to confide and then contractually sell a personal secret. The initial system took place in Lausanne at the Centre d'Arts scéniques Contemporain Arsenic during 4 months. It was further presented at the Centre Culturel Suisse in Paris for a period of 2 months. Altogether, more than 600 persons participated in the project.