The use of information and communication technologies (ICTs) has historically been bound to particular places. With the rapid proliferation of mobile technologies at the beginning of the 21st century, ICTs no longer connect places, but individuals [1]. Liberated by more powerful portable devices and an increasing ubiquity of telecommunications and wireless Internet (WiFi) networks, individuals may choose where and when their ICT-based activities are practiced. Binary notions of public and private, personal and professional, which were once confined to particular places, are blurring and mobile [3]. Places are both locally bound and globally connected [4].The variety of devices upon which mediated activities can now be conducted in addition to the rising availability of free Wireless Internet in public places, facilitates the nomadic nature of the ICT-carrying individual. While ICTs have taken some of the blame for a loss of interest in public spaces in the past [5, 6, 7], their role in “reactivating” public spaces as places of work and leisure may reverse this trend [8]. In fact, the most recent study from the Pew Internet and American Life Project [9] found that Internet users were more likely to visit public places than non-users, in contrary to the belief that Internet use leads to domestic cocooning.In this context, activities—along with people—are mobile. How could an understanding of the mobility of activities aid in questioning the design of public spaces? For architects and urban planners, this goes against traditional Taylorist planning principles [10], in which single functions are assigned to specific spaces [11]. Mobile devices and their respective infrastructures (like WiFi) are seldom approached by architects and urban planners as something to be taken into consideration when designing public places: their presence is often reduced to something seen as ancillary or even invasive.This communication will attempt to discuss the implications of 'mobile activities' on architecture and urban planning by looking at WiFi use and users as sources of inspiration for designing places of gathering in the 21st century. Analysis of server data from a local WiFi provider, ZAP Québec, and of results from an Internet survey of its members, carried out as part of a Master of science in architecture conducted in Quebec City at the Interdisciplinary Research Group on the Suburbs (GIRBa) at Université Laval [12], identify the most frequented hotspots and three WiFi users profiles. A spatial analysis, derived from the Pattern Language developed by Alexander and colleagues in the 1970s [13], reveals the common urban and spatial qualities that characterize the most frequented hotspots. While the exploratory nature of the study may raise more questions than it answers, its findings aid in discussing the impacts that mobile technology use may have on the conception of public places in the 21st century.