In case there is no Institution or Department please write instead "private"

The personal telephone number has often been very useful to the author, e.g. during EFCF events, to alert presenters in good time or to convey important information about changes. The number remains confidential at EFCF and will not be used for any other purpose (GDPR). If, despite the great benefits, you absolutely do not want to give a number, or do not have one, then simply enter 00000000000.