INCREASING RESILIENCE IN SURVEILLANCE SOCIETIES (IRISS)
15 February 2015
"The right of access to personal data is a central feature of European data protection law. It is, arguably, the most important of the so-called “ARCO” data protection rights (access, rectification, cancellation, opposition) because, if one cannot discover what is held about oneself, it is not possible to exercise the remainder of these rights. Furthermore, the right of access to personal data is essential to uncovering illegal and illegitimate surveillance practices."
See:
Recommendations to the Council of the EU and the European Parliament on access rights, in the context of the European data protection reform (pdf)