Please ensure your passport is valid until well after you plan to end your trip. If your current passport is due to expire within this period, then you must renew your passport before you depart.
Please check the information of the Swiss Federal Office for Migration to see if you require a visa to enter Switzerland. Registered ECPM 2012 participants should contact the Workshop Secretariat (ecpm2012@psi.ch) in order to receive the inivation letter needed for the visa application.