Identity, awareness and memory are considered three fundamental characteristics of the human being and they have always represented important philosophical issues: at present, they return in the philosophical and ethical debate on digital technologies and artificial intelligence, as far as their application to the human body is concerned, with different uses and functions, therapeutic, enhancing and empowering. The presentation will highlight how the dimensions of memory, awareness and identity are structured from a twofold movement, which from fixing and maintaining also passes through loss and redefinition: in fact, only by forgetting can we remember, only by alternating moments of non-consciousness can we be aware, only by progressively modifying our way of being can we express our identity in the transitions and passages of time and life. New technologies insert themselves on and interact with these kinds of dynamics, sometimes substituting functions, sometimes representing meaningful supports that allow to experiment different ways of preserving, expressing and defining the functions of memory, awareness and thus also identity.