This contribution studies the seniors' practices in relation with Digital Information and Communication Technologies (DICT) and gendered identities that are built through these practices. We make the hypothesis that Sex is a determining factor and that Gender structures practices as well as representations. The authors congujate sociological and semiotic approaches upon two fields: firstly, two groups of persons over 60 years, which one has followed a training to DICT, secondly, the Social Networking Service (SNS) Quintonic. The study reveals that beyond gender divisions, the seniors' practices make sense in the system of Gender－which distributes centers of interests between men and women－, participating in the construction of gendered identities. Furthermore, the SNS, because of their expressive dimensions, allow gender norms' interpretations. These interpretations question gendered identities.