The analysis of MDT regulation across specific use cases – particularly in mental health and well-being, commercial advertising, political advertising, and employment monitoring – suggests that MDTs, especially neurotechnologies, do not necessarily present entirely new legal questions or phenomena. Rather, they occasionally highlight existing deficiencies and weaknesses that have long been recognised, albeit sometimes exacerbating their effects. By strategically adapting and utilising existing laws and legal instruments, substantial improvements can be made to the legal framework governing MDTs. In some cases, stricter regulations are urgently needed, while in others, compliance and enforcement present significant challenges. Although recent legislation has created important opportunities to address these shortcomings, a political consensus has yet to be reached on all necessary aspects. Throughout the book, alternative approaches and adaptations de lege ferenda within both established and newly adopted laws have been proposed as sources of inspiration. The concluding remarks reiterate key legislative adaptations.