The Modern subject is usually defined by its epistemological capacity. Enlightened at heart, it is composed of a body and a mind evolving in an homogeneous space and time; it is mostly conscious, aware of the world to the extent of his/her knowledge. This model for subjectivity continues to produce the city both formally and as an abstraction. If this model has been under criticism since it emerged, today, the lived experience of space is being transformed more directly than before through the devices, software and networks that affect the sensing capacity of the subject. As it is possible to access quantities of information at a distance, through deserts and walls, it is also possible to be governed in the same manner. This aspect of the contemporary urban experience has notably exposed the inadequacy of the dialectical separation between spheres that have produced the modern subject and its habitat: the modern city. How to think the city when the domestic is public, the personal is political, and reproduction is production? How is the city transformed by the digital quantification of space which indexes both the living and nonliving and allows it to be managed in almost real-time? These are only partial formulations of the actual challenges brought by the heterogeneous dynamics at work today with the evolution of labor, technologies and subjectivity. A contemporary analysis of the city needs to account for the destabilization of the dichotomies that still constitute the subject at large, whether they are body or mind, human or nonhuman, and material or immaterial. In this regard, there is something actually fascinating in the fact that objects or cities are now wished with a particular personality trait, and be called smart.