Blatter: Spray to Mark Free Kicks at World Cup FIFA President Sepp Blatter says vanishing spray will be used to mark distances for free kicks at the World Cup in Brazil. The spray, which was developed in Argentina and Brazil, is currently used at the Club World Cup in Morocco. The referee uses the spray to mark the line where players can set up their defensive wall before a free kick. Blatter says "we started using it in all (our) competitions this year and at the World Cup we will definitely keep on the same path." Blatter says he was "skeptical at first but after talking to referees who used this system, they were all happy with it."