This paper explores the importance of transparency and control to users in the context of inferred user interests. More specifically, we illustrate the association between various levels of control the users have on their inferred interests and users' trust in organizations that provide corresponding content. Our results indicate that users value transparency and control very differently. We segment users in two groups, one who states to not care about their personal interest model and another group that desires some level of control. We found substantial differences in trust impact between segments, depending on actual control option provided.

Vehicles increasingly include features that rely on hi-tech sensors and recording; however, little is known of public attitudes toward such recording. We use two studies, an online survey (n=349) and an interview-based study (n=15), to examine perceptions of vehicle-based sensing and recording. We focus on: 1) how vehicle-based recording and sensing may differ from perceptions of current recording; 2) factors that impact comfort with vehicle-based recording for hypothetical drivers versus bystanders; and 3) perceptions of potential privacy-preserving techniques. We find that vehiclebased recording challenges current mental models of recording awareness. Comfort tends to depend on perceived benefits, which can vary by stakeholder type. Perceived privacy in spaces near cars can also impact comfort and reflect mental models of private spaces as well as the range of potentially sensitive activities people perform in and near cars. Privacypreserving techniques may increase perceived comfort but may require addressing trust and usability issues.

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