Today organizations are more than ever complex systems. They are large, ramified, distributed, and intertwined so that their organic structure seems like a tangle of activities. Day by day individuals contribute to keep these structures alive with their work, thoughts, and personalities, and as a result organizations rely on these daily practices. Contemporary sociology aims to untangle the network of practices through the analysis of digital traces that are distributed in desktop computers, smart phones, Wi-Fi and GPS signals, payment systems, badges, information systems, etc. Digital traces are all the information that individuals leave behind them during daily activi-ties. The challenge is therefore to recompose a faithful image of an organization us-ing the data that its members left behind in various forms.