Currently, assistive technology focuses on promoting greater independence for people with disabilities by enabling them to perform tasks on a personal basis. For certain disabilities, such as cognitive impairment, the requirements for dual interface development must address the needs of target users, as well as their caregivers. Assistive technology that leverages networks of caregivers, who are nomadic or remain on the go constantly, has not been developed into useful services or even explored systematically. In this article, first we propose a general architecture of mobile social networks where individuals in the networks form a virtual community, conversing and connecting with one another, based on mobile communication. Second, we describe an implementation of mobile social networks in collaboration with a supported employment program established for people with severe mental illness.