Analysing refugees’ secondary mobility using mobile phone Call Detail Records (CDR)

This chapter provides insights on how mobile phone data, more specifically
Call Detail Records (CDR), can be used to perform mobility and migration
analyses. It is written from the perspective of migration and mobility researchers,
and thus should give an accessible exposition of the data science aspects. We start
with a very brief introduction to the background of mobility analyses from CDR,
and then, using a concrete example (Syrian refugees in Turkey), we provide basic
steps and some key challenges that need to be considered when analysing and
dealing with such data. As the ethical aspects of this topic are highly relevant, we
provide a reflection of the ethics of this concrete case example as well.