Smart cities promise great things through urban digitisation: real-time responses to logistical challenges that stem from ever-expanding urban areas; benefits for the education and health system; boosts in political participation; advances for the sharing economy. At #rp17 we spoke to you about intuitive mobility, energy transition through Blockchain, open source and zero-emission logistics. We wish to continue the debate at #rp18, differentiating between relevant issues on smart cities: What’s new on this topic today? Which opportunities arise through urban connectivity and what limitations (still) exist? Which goals are we setting and which ethical issues must we face in this context?