This demonstration presents the BIONETS opportunistic service evolution platform. The proposed platform allows pervasive services to evolve over time by exploiting opportunistic communications among mobile nodes on the one hand, and evolutionary computation on the other. The demonstrator follows a hardware–in–the–loop approach where a simulation platform, in charge or reproducing a large number of mobile nodes communicating wirelessly, is integrated with a prototype. The platform is presented in the MyDirector use case, an entertainment application aimed at sharing video snapshots in an urban setting.