Passenger data is often systematically evaluated in order to prevent terrorist attacks. However, according to the European Court of Justice, data analysis must comply with clear limits.
According to a ruling by the European Court of Justice, the processing of passenger data by the EU states must be limited to what is absolutely necessary for the fight against terrorism.
In addition, the European Supreme Court made it clear in Tuesday’s judgment that the processing of data on flights within the EU violates EU law unless there is a terrorist threat (Case C-817/19).
The so-called PNR Directive (Passenger Name Record) provides for the systematic processing of large numbers of passenger data when crossing an external EU border. This is intended to prevent and detect terrorist offenses and other serious crimes.
The Belgian human rights organization Ligue des droits humains (Human Rights League) complained about how Belgium is implementing the rules. Among other things, she sees the right to respect for private life and the protection of personal data as being violated. In addition, the extension of the system to flights within the EU and to transport by means of transport other than air would indirectly reintroduce border controls.
According to Belgian law, airline, train, bus, ferry and travel companies are obliged to pass on the data of their passengers who are traveling across national borders to a central office in which, among other things, the police and secret services are represented.
Source: Stern

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