In Following Piece, the American architect and conceptual artist Vito Acconci (b. 1940) spent 23 days hot on the heels of people encountered at random on the street. Sometimes he followed them for just a few minutes, sometimes for hours. By tracking people on the basis of chance encounters until they disappeared into some private space, the artist briefly connected unknown bodies to his own.
Vito Acconci, Following Piece, 1969