Click on the following link, https://vistoperitalia.esteri.it/home/en and follow the procedure to find out if you need to apply for a visa according to your nationality, country of residence, reasons for your visit and length of stay.
If you need VISA to enter in Italy, the Organizing Committee, verified your registration at the event, will give you all the info and an invitation letter to submit at the italian embassy of your country.
The Orgaizing Committe will do the best to facilitate VISA issuing by the embassy but, in any case, decline any responsability for failure of issue despite the documentation presented.
It is strongly recommended to ask the Organizing Committee for the invitation letter necessary for the visa application and to forward the necessary documentation to the embassy well in advance.
All enquiries in this regard should be sent to the following e-mail address: email@example.com
Interested parties may find further information at the Italian Embassy or Consulate responsible for their place of permanent residence.
Upon entry into Italy and the Schengen Area, even if you are in possession of a visa, the Border Authorities are authorised to re-check the documents required to issue the visa.