Acknowledgements
The authors would like to acknowledge the financial support provided by the IMISCOE Research Network for the Research Group that led to this special issue, at IMISCOE’s 10th Annual Conference: “Transformations of Border Control: The politics of (im)mobility in times of crisis.” This work has also been supported as a dissemination activity by the FastPass project, under the European Union’s Seventh Framework Programme (FP7/2007-2013) under grant agreement n° 312583.