Data protection legislation: A very hungry caterpillar. The case of mapping data in the European Union

The European Union's policy on open data aims at generating value through re-use of public sector information, such as mapping data. Open data policies should be applied in full compliance with the principles relating to the protection of personal data of the EU Data Protection Directive. Increased computer power, advancing data mining techniques and the increasing amount of publicly available big data extend the reach of the EU Data Protection Directive to much more data than currently assumed and acted upon. Especially mapping data are a key factor to identify individual data subjects and consequently subject to the EU Data Protection Directive and the recently approved EU General Data Protection Regulation. This could in effect obstruct the implementation of open data policies in the EU. The very hungry data protection legislation results in a need to rethink either the concept of personal data or the conditions for use of mapping data that are considered personal data.