Soft regulation has increased its importance in science and technology governance. Despite such indisputable significance, the literature on technology policy and regulation so far seems to have dedicated only a limited attention to a systematic understanding of the factors affecting compliance with these soft rules. This article addresses this limitation. By way of a literature scoping exercise, we propose a taxonomy of the mechanisms affecting compliance with soft regulation. We subsequently apply the taxonomy as a guide to examine the opinions of a small group of scientists and company managers in the Italian nanotechnology sector. The case study does not assess compliance in a direct way, i.e., observing how organizations comply with regulation, but it explores the opinions on what the factors affecting compliance are (and why they work).
