Online grocery delivery services present new opportunities to address food disparities, especially in underserved areas. However, such services have not been systematically evaluated. This study evaluates such services' potential to provide healthy-food access and infuence healthy-food purchases among individuals living in transportation-scarce and low-resource areas. We conducted a pilot experiment with 20 participants consisting of a randomly assigned group's 1-month use of an online grocery delivery service, and a control group's 1-month collection of grocery receipts, and a set of semi-structured interviews. We found that online grocery delivery services (a) serve as a feasible model to healthy-food access if they are afordable and amenable to multiple payment forms and (b) could lead to healthier selections. We contribute policy recommendations to bolster afordability of healthy-food access and design opportunities to promote healthy foods to support the adoption and use of these services among low-resource and transportation-scarce groups.

Undocumented immigrants in the United States face risks of discrimination, surveillance, and deportation. We investigate their technology use, risk perceptions, and protective strategies relating to their vulnerability. Through semi-structured interviews with Latinx undocumented immigrants, we find that while participants act to address offline threats, this vigilance does not translate to their online activities. Their technology use is shaped by needs and benefits rather than risk perceptions. While our participants are concerned about identity theft and privacy generally, and some raise concerns about online harassment, their understanding of government surveillance risks is vague and met with resignation. We identify tensions among self-expression, group privacy, and self-censorship related to their immigration status, as well as strong trust in service providers. Our findings have implications for digital literacy education, privacy and security interfaces, and technology design in general. Even minor design decisions can substantially affect exposure risks and well-being for such vulnerable communities.