Addressing digital security and privacy issues can be particularly difficult for users who face challenging circumstances. We performed semi-structured interviews with residents and staff at 4 transitional homeless shelters in the U.S. San Francisco Bay Area (n=15 residents, 3 staff) to explore their digital security and privacy challenges. Based on these interviews, we outline four tough times themes --- challenges experienced by our financially insecure participants that impacted their digital security and privacy --- which included: (1) limited financial resources, (2) limited access to reliable devices and Internet, (3) untrusted relationships, and (4) ongoing stress. We provide examples of how each theme impacts digital security and privacy practices and needs. We then use these themes to provide a framework outlining opportunities for technology creators to better support users facing security and privacy challenges related to financial insecurity.

Talk therapy is a common, effective, and desirable form of mental health treatment. Yet, it is inaccessible to many people. Enabling peers to chat online using effective principles of talk therapy could help scale this form of mental health care. To understand how such chats could be designed, we conducted a two-week field experiment with 40 people experiencing mental illnesses comparing two types of online chats-chats guided by prompts, and unguided chats. Results show that anxiety was significantly reduced from pre-test to post-test. User feedback revealed that guided chats provided solutions to problems and new perspectives, and were perceived as "deep," while unguided chats offered personal connection on shared experiences and were experienced as "smooth." We contribute the design of an online guided chat tool and insights into the design of peer support chat systems that guide users to initiate, maintain, and reciprocate emotional support.

We present a qualitative study of the digital privacy and security motivations, practices, and challenges of survivors of intimate partner abuse (IPA). This paper provides a framework for organizing survivors' technology practices and challenges into three phases: physical control, escape, and life apart. This three-phase framework combines technology practices with three phases of abuse to provide an empirically sound method for technology creators to consider how survivors of IPA can leverage new and existing technologies. Overall, our results suggest that the usability of and control over privacy and security functions should be or continue to be high priorities for technology creators seeking ways to better support survivors of IPA.

Barriers to accessing mental health care leave the majority of people with mental illnesses without professional care. Peer support has been shown to address gaps in care, and could scale to wider audiences through technology. But technology design for mental health peer support lags far behind tools for individuals and clinicians. To identify opportunities for design, we interviewed 18 people with a diverse range of mental illnesses about their use of technology for peer support, and invited them to design technologies that could improve their experience of peer support. We found that technology could enhance peer support for mental health by: (1) matching peers on similarities beyond diagnosis; (2) enhancing accessibility; and (3) proactively mitigating risk through training and intervention. We discuss these findings in the context of the broad peer support literature, and present design opportunities for making mental health peer support tools empowering, accessible, and safe.

What is the role of shared calendars for home health management? Utilizing a maximum variation sampling method, we interviewed 20 adult individuals with diabetes and 20 mothers of children with asthma to understand calendar use in the context of chronic disease home health management. In comparing the experiences of these two groups, we explore participants' use of tools for organizing tasks and appointments, their strategies for capturing health and non-health events in the family calendar system, the ecology of artifacts that intersect with their scheduling tools, and the failures they experienced while managing their calendar systems. Through this work, we offer a context-specific perspective of schedule management strategies for individuals and families who must integrate their handling of chronic illnesses with everyday living.

A "discount" version of Q-methodology for HCI, called "HCI-Q", can be used in iterative design cycles to explore, from the point of view of users and other stakeholders, what makes technologies personally significant. Initially, designers critically reflect on their own assumptions about how a design may affect social and individual behavior. Then, designers use these assumptions as stimuli to elicit other people's points of view. This process of critical self-reflection and evaluation helps the designer to assess the fit between a design and its intended social context of use. To demonstrate the utility of HCI-Q for research and design, we use HCI-Q to explore stakeholders' responses to a prototype Alternative and Augmentative Communication (AAC) application called Vid2Speech. We show that our adaptation of Q-methodology is useful for revealing the structure of consensus and conflict among stakeholder perspectives, helping to situate design within the context of relevant value tensions and norms.