Some non-European Union citizens may be required to visit an embassy and have a formed signed to receive a travel visa. If you plan on attending oSC16 from a non-EU country, please be sure to review http://www.auswaertiges-amt.de/EN/EinreiseUndAufenthalt/StaatenlisteVisumpflicht_node.html to see if you are coming from a countries that need one.
Email ddemaio@suse.com for more information.