CJEU: The PNR is only for terrorist threat and the 5 year retion period only for targeted passengers

Thomas Wahl has a great analysis:

[…] in these situations restrictions to citizens’ rights are only proportional, if there is a genuine and present or foreseeable terrorist threat to which the Member State concerned is confronted or, in the absence of that, application is limited to certain routes or travel patterns or to certain airports/stations/seaports (see above). Furthermore, EU law precludes national legislation that wishes to use such system for the purposes of improving external border controls and combating illegal immigration.