Cardinals have no contact with the outside world after the master of liturgical ceremonies utters the words “Extra Omnes” the Latin phrase for “all out,” to ask all those present except the cardinal electors to leave the Sistine Chapel to begin the voting process.

The decision was made at the Fifth General Congregation, held on Monday morning in the Vatican's Synod Hall. The conclave will take place in the Vatican's Sistine Chapel, which will remain closed to visitors during those days.