Representatives of UEFA and Ukraine's tournament executing committee attended the ceremony at the Olympic Stadium which will host the final match of Euro 2012.

　　The unveiling ceremony of purple-colored tickets with the Euro 2012 logo on it was organized to show the fans the authentic ticket design and protect football supporters from fraud.

　　"Every ticket has up to 10 levels of protection. Hologram and unique identification code are the main features of the ticket. Stewards, who will work directly on the stadiums, will know five or six other signs of authenticity," Kallen told reporters during the presentation.

　　The tickets were printed in Portugal and Austria, Kallen said, adding that it was virtually impossible to forge them.

　　UEFA sold through its website a total of 500,000 tickets for Euro 2012 matches at the prices range from 30 to 600 euro.

　　The rest 900,000 tickets have been distributed to national federations, sponsors, UEFA guests and business package buyers.

　　Euro 2012 will be staged from June 8 to July 1 in Ukraine and Poland.