Computerized machines can be found in many forms and all around us – in our pockets, and even sometimes in our body. For many of us, they are now essential elements of everyday life. When it comes to smartphones, connected objects, medical digital devices and e-health, these digital tools have proliferated in our environment, continually transforming our modes of social organization. They act as prostheses and orthotics that "enhance our cognitive capacities and influence our inherent behaviors. Are digital tools that perpetually envelop the body and the spirit able to overwhelm the social order? Could our cognitive prosthetics lead to permanent, radical change to our society, which could become similar to a hive? This book explores this reflection, which is at the center of social research on digital tools. - Presents a complete review of the field of computerized human prosthetics - Drawn from research conducted over 6 years and from 2 post doctoral surveys conducted at renowned institutions in France and Japan (Sorbonne University, CNRS, Tokyo Institute of technology) - Provides an interdisciplinary approach, combining anthropology, sociology, psychology and philosophy