Teams to use sign language

Dutch coach Bert van Marwijk has banned them from his team's training sessions and Danish keeper Thomas Sorensen suggested teams use increased planning, eye contact and sign language to overcome the problems caused by ceaseless din.

Vuvuzelas have been controversial since the Confederations Cup last year, a World Cup dress rehearsal, when several players complained they could not communicate through the racket.

FIFA President Sepp Blatter also rejected calls for them to be banned, saying they are as typical of South African football as bongo drums or chants in other countries