Abstract
The chapter aims to deepen the theme of the participation of gender and sexual minorities in social research, with a specific focus on the new possibilities offered by the digital society. After defining the concept of “hidden populations” or “hard -to -reach populations,” the contribution focuses on the factors of greatest vulnerability of the LGBT population. Subsequently, the chapter aims to review the literature regarding the barriers to the sampling, recruitment, participation, and involvement of sexual and gender minorities, highlighting some strategies to overcome some of the main barriers, through a plurality of innovative procedures made possible by the so-called digital society.