SIS covers the following categories of data subjects:
third-country nationals who are subject to a refusal of entry or stay in the Schengen area or subjects of return procedures;
persons wanted for arrest for surrender or extradition purposes;
missing persons (including vulnerable persons who should be prevented from travelling, such as children at high risk of parental abduction, children at risk of becoming victims of human trafficking and children at risk of being recruited as foreign terrorists);
persons wanted for the purpose of assisting in criminal proceedings;
persons subject to discreet, investigative or specific checks, unknown wanted persons who are linked to a crime (e.g. persons whose fingerprints have been found on a weapon used in a crime);
information on third-country nationals of Union interest (‘alerts’).
Last updated: 16.02.2024
