Stoke City goalkeeper Thomas Sorensen admits Denmark's players can only communicate via eye contact during the World Cup.

The 34-year-old City number one joined the criticism of the Vuvuzelas.

He said: "The problem is you just cannot communicate.

"You really have to use eye contact. Whatever I say to the defenders will not be heard. You need things sorted out before the game, know where people are, use hand signs, because you have no chance on the field to do things quickly."