It is likely that personal data will be entered into the poll. doodle is a service provider based outside the European Union, which means that compliance with the GDPR is not guaranteed, and also announces that data stored on doodle will be made available to partner companies for analysis purposes.
To avoid legal uncertainties, it is recommended that you use DFN Scheduler for polls. The DFN Scheduler is operated by the German Research Network (Deutsches Forschungsnetz e.V), an association of universities and research institutions in Germany, of which Reutlingen University is a member. DFN Scheduler is accessed via the DFN network instead of via public networks - this means that the data does not leave the research and teaching environment.