This is kind of cool.
“AMSTERDAM (Reuters) – Dutch hooligans will be kept in check by voice verification software which will ensure they are at home rather than supporting their favorite team.
The Dutch ministry of Justice wants to guarantee that fans do not break stadium bans imposed for bad behavior.
A computer with voice verification software, developed by the Israeli firm Dmatec, will call banned fans on their home phones when the match is about to kick off.
The fans have to say sentences which have been agreed in advance and the computer is able to tell if the call has been put through to a mobile phone, the ministry says.
The trial will start soon in Amsterdam, Rotterdam and Arnhem for fans of the Ajax, Feyenoord and Vitesse clubs.”