West Ham United manager Sam Allardyce has called for the football authorities to use CCTV footage to ban volatile fans for life.
Last weekend's Manchester derby was marred by a late incident which saw Rio Ferdinand struck by a coin thrown by a Man City fan.
That incident has prompted calls for netting to be introduced as a means of separating fans from the players, but Allardyce believes that lifetime bans would be a more effective deterrent.
"I think the more we use CCTV to weed out these individuals and ban them for life the less chance we have got of this kind of thing happening again," said Allardyce.
"We don't want to start caging people in again, I know it is only netting but is more like they are trying to cage people in and I don't think that works, I think that creates a more volatile situation in the fanbase area.
"I think that, when it happens, we have got the technology today to weed them out and ban them for life. That would send shivers across our country. Fans are so passionate and want to watch football and if they aren't allowed to do what they want to do forever then I think it is going to cut it out."
CCTV was recently used to identify a man alleged to have made a racist gesture to Norwich City defender Sebastien Bassong.
