Schengen Information System

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The Schengen Information System (SIS) is a governmental database maintained by the European Commission. The SIS is used by 31 European countries to find information about individuals and entities for the purposes of national security, border control and law enforcement since 2001. A second technical version of this system, SIS II, went live on 9 April 2013.^[1] An upgraded Schengen Information System entered into operation on 7 March 2023.^[2]