The balls are equipped with rattles so the players can hear where it's headed
I just listened to a news story on Deutsche Welle radio about blind soccer utilising a soccer ball that makes certain sounds. Players wear protective gears. There seems to be a league as well. Maybe there is a way to improve this and initiate a league in South America. It is the continent of soccer after all!!
Deutsche Welle Article on Blind Soccer
This is very interesting, playing soccer by the sound of the ball.
En Argentina tenemos un equipo de futbol para ciegos y es el campeon mundial, se llaman “Los murcielagos” y juegan con pelotas con sonido
that´s really great!!!
I found this link with more info about the team in argentina:
Los murcielagos argentina @ Taringa
Do you have more info on the league?