All third-country nationals, regardless of their visa obligation status, who wish to enter the Schengen Area through Switzerland must be in possession of a recognized travel document that meets both of the following two requirements:
The validity of the travel document must extend at least three months after the intended date of departure from the Schengen Area; and
the travel document must have been issued within the previous 10 years.
The date of issue of the travel document shall be the determining factor, notwithstanding any decision by the authorities to extend the period of validity of the travel document.
The two conditions mentioned above do not apply to travel documents of third-country nationals who hold a valid residence permit issued by a Schengen country (List of residence permits issued by Schengen member states (PDF, 1 MB, 29.07.2014)) or who have been issued valid category D visa by a Schengen country. In such cases, the travel document must be valid at the time of entry and remain valid for the entire duration of the planned stay in Switzerland or other Schengen country.
Please find travel documents entitling the holder to cross the external borders in the following document:
To ensure that the most recent documents are available at all times, reference is made to the website of the European Commission. The documents can be found on the right under "Info": (Travel documents issued by third countries and territorial entities (Part I); Travel documents issued by Member States (Part II); Travel documents issued by international organisations and other entities subject to international law (Part III); List of known fantasy and camouflage passports)
The maximum duration of short stays within the Schengen Area is 90 days in any 180-day period. The entry and departure dates are also used in the calculation of the duration of stay.
For stays in Switzerland of more than 90 days, a residence permit is required. In principle, this residence permit has to be filed before entering Switzerland at the cantonal migration office. The same applies also to nationals of countries who are exempt from the obligation to hold a visa for stays of more than three months.