The Schengen Information System, also called “SIS”, is a secure governmental database system used by several European countries for the purpose of maintaining and distributing information related to border security and law enforcement. The data collected concern certain classes of persons and property. This information is shared among the participating countries of the Schengen Agreement Application Convention (SAAC). The five original participating countries were France, Germany, Belgium, the Netherlands, and Luxembourg. Nineteen additional countries have joined the system since its creation, including Spain, Portugal, Italy, Austria, Greece, Finland, Sweden, Switzerland, Denmark, Iceland, Norway, Estonia, the Czech Republic, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia and Slovenia. Currently, the Schengen Information System is used by 27 countries. It should be noted that among the current participants, Iceland, Norway, and Switzerland are not members of the European Union.
Although the Republic of Ireland and the United Kingdom, have not signed the SAAC, they take part in the Schengen co-operation under the terms of the Treaty of Amsterdam, which introduced the provisions of Schengen Acquis into the European Union. Schengen Acquis allows the United Kingdom and Ireland to take part in all or part of the Schengen arrangements, subject to unanimous approval by the Council. Ireland and the United Kingdom will mainly use the Schengen Information System for law enforcement purposes. They will not use the Article 96 data, because they do not intend to implement the policy of freedom of movement of persons at the European level (In 2006, Ireland implemented Directive 2004/38/EC, E.U free Movement of Persons directive as Irish Statutory Instrument S.I 656/2006)
A second technical version of the system is in preparation (SIS II), in order to include new types of data and to integrate the new Member States of the Union. The system would be opened with a greater number of institutions (for example, the legal authorities, Europol, and the security services). Personal data could be read on one personal assistant in all Europe, by the police force and the customs during the identity checks. (Although this type of implementation yet remains in the future, it would be under the responsibility and limited by the technical capabilities of each Member State.) Some would like to benefit from these technical changes to turn this system into an investigation system, but a great number of Member States want this system to remain a system of police checks, leaving to Europol the role of investigation.
Joined by the three member states of Benelux, these five countries signed the Schengen Agreement on June 14 1985 for the purpose of gradually establishing free movement of persons and goods between them. Although seemingly simple, this presented a number of difficulties. The tradeoff for this freedom is that each state had to relinquish a portion of its autonomy and trust its partners to carry out the measures necessary to its own safety.
In order for the reduction of interior border checks to be done without causing a deficit of safety, in particular since Europe already faced a real terrorist threat, compensatory measures were to be implemented.
Drafting the text took five years. It was only on June 19, 1990 that the five precursory states who signed the Schengen Agreement Application Convention of June 14, 1985 (SAAC), began to be gradually joined by Spain, Portugal, Italy, Greece, Austria and the five Nordic Passport Union countries: Denmark, Finland, Iceland, Norway and Sweden.
On December 21, 2007 Schengen border-free zone was once more enlarged to include nine new nations: Estonia, the Czech Republic, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia and Slovenia.
To do this, these States committed by signing the convention to ensure the correctness, the up to date status and the legality of the integrated data, and to use these data only for the finality stated by the relevant articles of convention. These commitments are supplemented by consultation procedures between the States; in particular when for reasons of national law, or of opportunity, an action to be taken cannot be carried out on a given territory. This consultation gives the possibility to national authorities to expose the reasons of right or fact about a record and, on the other hand, to inform a requesting State of the reasons for which the action to be taken would not be applied. This procedure applies in particular for records from foreigners considered as undesirable by a country, but holder of a residence permit delivered by another country, for international warrants for arrest, or for cases of State security.
Being an information processing system dealing with the personal data, the preoccupation of protection of the private life existing in the countries founders on the matter is transposed naturally in the text of the convention, which enacts that the existence of a data law is a precondition to the implementation of convention in the countries. Thus, each national authority (for France the National Commission of data processing and freedoms or “CNIL”) is in charge of the control of the national part of SIS. The central system, essentially international although under French responsibility, could not remain without control. The Convention thus created a common control authority, independent of the States, and composed of representatives from the national authorities. It takes care of the strict application of the provisions relating to the personal data protection.
At technical level, the participating countries adopted a data-processing star architecture made up of a central site containing the reference database, known as C-SIS, for which the responsibility is entrusted to the French Republic by the CAAS, and a site by country, known as N-SIS, containing a copy of the database. These various bases must be identical permanently. All together C-SIS and N-SISes constitutes the SIS.
In addition are concerned the following objects:
By the communication of this data, each State places at the disposal of its partners the information allowing them to ensure for its account, and on the basis of its own information, the share of safety that it delegates to them. A strong technical constraint, aiming at ensuring the update of SIS in a five minutes maximum, ensures the correctness of the data.
Considering that a system is worth only by the use which is made of it, France, for the insertion of the records in of SIS, chose an automated solution, extracting them from the large national databases. This automation limits to the minimum the human interventions, usually generating errors and waste of time. The French records are thus transmitted to the countries participating in SIS, in a very short time.
In the same spirit, France decided to couple the query of the system, by the end-users of the national data bases, with the SIS, without causing an extra load of work for the end-user. Thus, without specific additional operation, the police officer querying the database of the wanted persons (FPR) or the database of the stolen vehicles (FVV) will obtain a response at the level of the Schengen States at the same time as the response at the national level.
The discoveries carried out by the end-users on the basis of SIS records implies mandatory the application of the measurements envisaged by the action to be taken, indicated by the requesting country. The operation of SIS thus generates an exchange of information between the services of the participating States.
The linguistic problem brought the creation of particular procedures which describe, according to pre-established forms, the way in which the exchanges must proceed, as well as the creation, in each country, of an office particularly in charge of this new international form of cooperation. This service, single contact point by country, ensures the transmission between the French and foreign services of the all relevant information allowing the execution of the measure to be taken, and their translation, took the name of SIRENE (Supplementary Information Request at the National Entry). Whenever a State authority has a hit on a SIS record, the SIRENE exchange, by its own communication network, sends notification forms of the discovery and further information which, although essential to the good continuation of the investigations and procedures in progress, cannot appear in the SIS records themselves.
The legal mutual assistance envisages in particular, the possibility of transmitting directly certain parts of procedure by postal way to the persons being on the territory of other States; to transmit requests for legal mutual assistance directly between legal authorities; finally to transmit the execution of a criminal judgement to a contracting part on the territory of which one of its nationals took refuge. In addition, the convention compares the inscription of a warrant for arrest in the SIS to a request for provisional arrest for extradition, which causes to ensure the immediate placement of the individuals under extradition detention.
Switzerland has now also decided to join Schengen using SISone4ALL before SIS II deployment.