With the development of technology many new legal institutions were regulated in the criminal justice systems. Electronic monitoring is one of those, which from the Hungarian perspective first appeared in the form of home detention in criminal procedure law. Later on, in 2015 the technology of electronic monitoring was implemented in prison law as the institution of reintegrative surveillance. The regulation is basically appropriate and according to the experiences could be seen as effective. However, there are some related theoretical questions which need to be answered. For example, the question of widening the potential application of reintegrative surveillance, or the relation between reintegrative surveillance and imprisonment or conditional release. Answering these questions is important as presumably the technological development won’t stop on this level, thus we can expect the widening of electronic monitoring in Hungary as well.