Since this topic often leads to misunderstandings and many people are unsure whether they should bring a printed copy of their resume with them or not: It is completely acceptable under data protection law for exhibitors to accept a printed resume on site and review it with you in order to provide feedback. As long as the document is not retained afterwards, there are no obligations associated with permanent data processing (data protection information, consent, storage and deletion obligations, etc.). Ideally, you should bring both a printed and a digital version of your CV with you.