An improved technique for managing access of a user of a computing machine to a remote network collects device posture information about the user's mobile device. The mobile device runs a soft token, and the collected posture information pertains to various aspects of the mobile device, such as the mobile device's hardware, software, environment, and/or users, for example. The server applies the collected device posture information along with token codes from the soft token in authenticating the user to the remote network.