EU citizens only require their national identity papers to travel to Switzerland.
Citizens from most other countries will need a valid passport. They are encouraged to contact their local Swiss embassy or consulate to enquire about the necessity of a visa.
Letter of Invitation
Upon request, the chairman of the Conference will be pleased to send a personal letter of invitation to enable participants to obtain supporting funds or visas to attend the Conference. These invitation letters cannot be considered an offer of financial support by the organizers.