What kind of personal data and for what purposes can be kept in the Schengen Information System?
Pursuant to Article 94 of the Convention Implementing the Schengen Agreement the Schengen Information System contains only those categories of data which are supplied by each of the parties to the Convention as required for the purposes specified in this normative act. According to the second paragraph of this Article categories of data supplied to the System pertain to persons for whom an alert has been issued and objects referred to in Article 100 of the Convention Implementing the Schengen Agreement and vehicles referred to in Article 99 of this Convention. Data concerning persons for whom an alert has been entered into the Schengen Information System should be no more than the following:
Pursuant to Articles 95-99 of the Convention Implementing the Schengen Agreement in the Schengen Information System only the following alerts are kept:
- surname and forenames, any aliases possibly entered separately,
- any specific objective physical characteristics not subject to change,
- place and date of birth,
- sex,
- nationality,
- whether the persons concerned are armed, violent or have escaped,
- reason for the alert,
- action to be taken.
Pursuant to Articles 95-99 of the Convention Implementing the Schengen Agreement in the Schengen Information System only the following alerts are kept:
- alerts pertaining to persons wanted for arrest for extradition purposes,
- alerts pertaining to foreign nationals who were refused the right of entry,
- alerts pertaining to missing persons or persons who, for their own protection or in order to prevent threats, need to be temporarily placed under police protection,
- alerts pertaining to witnesses, persons summoned to appear before the judicial authorities in connection with criminal proceedings in order to account for acts for which they are being prosecuted, persons who are to be served with a criminal judgement or a summons to report in order to serve a penalty involving deprivation of liberty,
- alerts pertaining to discreet surveillance of persons and vehicles.


