Italian soccer authorities are to speed up the adoption of a card to separate non-violent fans from hooligans.
So far the electronic cards, which let 'clean' fans through turnstiles and give them access to a range of services, are only available on a trial basis from AC Milan and Inter Milan.
A 'fan passport' was tried out last season at another Serie A club, Udinese.
The Italian Observatory on Sporting Events (OMS) said Wednesday the card would be a ''reference point'' in the anti-hooligan fight, which has been renewed after a rampage by Napoli fans shocked the country.
Interior Minister Roberto Maroni said the card would be ''the best way to protect true fans and keep hooligans out''.
''We will make every effort to ensure all clubs issue the cards as soon as they can,'' he said.
''If we want to save soccer, clubs have to step up to the plate and isolate violent fans''.
Clubs will issue the cards to fans after asking police whether the supporters have ever been involved in soccer violence or received stadium bans, the OMS said.
The authorities have stiffened penalties and stepped up travel bans since Napoli fans forced passengers off a train they then wrecked on the way to see Napoli play Roma in Rome on the first day of the season.
Travel bans were issued Thursday for three upcoming Serie A games: Genoa-Roma on September 24; and Bologna-Napoli and Roma-Atalanta, both on September 28. The sections of the grounds that would normally contain visiting fans will instead be reserved for fans with children, the Sporting Events Safety Assessment Panel (CASMS) said.
In another move to prevent hooligans getting hold of tickets, CASMS decided that only one ticket a head will be sold to visiting fans for the following games: Catania-Atalanta on September 20; Milan-Lazio on September 21; Juventus-Catania, Inter-Lecce and Lazio-Fiorentina on September 24; Sampdoria-Juventus on September 27; and Torino-Lazio and Palermo-Reggina on September 28.
Fans will be asked for their identification cards - which are required for all Italian residents by law - to be checked against hooligan records.
For the AC Milan-Inter derby on September 28 only one ticket a head will be available for fans of both teams.
Next Sunday's Cagliari-Juventus game will be open only to fans who can prove they live in Sardinia.