[{"oa":"1","citation":{"ama":"Todt J, Kablo E, Morsbach F, Arias Cabarcos P, Strufe T. “The city isn’t uploading me to TikTok”: Exploring Privacy Attitudes towards Data Collection in Urban Public Spaces. <i>Proceedings on Privacy Enhancing Technologies</i>. 2026;2026(4):7-35. doi:<a href=\"https://doi.org/10.56553/popets-2026-0108\">10.56553/popets-2026-0108</a>","bibtex":"@article{Todt_Kablo_Morsbach_Arias Cabarcos_Strufe_2026, title={“The city isn’t uploading me to TikTok”: Exploring Privacy Attitudes towards Data Collection in Urban Public Spaces}, volume={2026}, DOI={<a href=\"https://doi.org/10.56553/popets-2026-0108\">10.56553/popets-2026-0108</a>}, number={4}, journal={Proceedings on Privacy Enhancing Technologies}, publisher={Privacy Enhancing Technologies Symposium Advisory Board}, author={Todt, Julian and Kablo, Emiram and Morsbach, Felix and Arias Cabarcos, Patricia and Strufe, Thorsten}, year={2026}, pages={7–35} }","mla":"Todt, Julian, et al. “‘The City Isn’t Uploading Me to TikTok’: Exploring Privacy Attitudes towards Data Collection in Urban Public Spaces.” <i>Proceedings on Privacy Enhancing Technologies</i>, vol. 2026, no. 4, Privacy Enhancing Technologies Symposium Advisory Board, 2026, pp. 7–35, doi:<a href=\"https://doi.org/10.56553/popets-2026-0108\">10.56553/popets-2026-0108</a>.","chicago":"Todt, Julian, Emiram Kablo, Felix Morsbach, Patricia Arias Cabarcos, and Thorsten Strufe. “‘The City Isn’t Uploading Me to TikTok’: Exploring Privacy Attitudes towards Data Collection in Urban Public Spaces.” <i>Proceedings on Privacy Enhancing Technologies</i> 2026, no. 4 (2026): 7–35. <a href=\"https://doi.org/10.56553/popets-2026-0108\">https://doi.org/10.56553/popets-2026-0108</a>.","short":"J. Todt, E. Kablo, F. Morsbach, P. Arias Cabarcos, T. Strufe, Proceedings on Privacy Enhancing Technologies 2026 (2026) 7–35.","apa":"Todt, J., Kablo, E., Morsbach, F., Arias Cabarcos, P., &#38; Strufe, T. (2026). “The city isn’t uploading me to TikTok”: Exploring Privacy Attitudes towards Data Collection in Urban Public Spaces. <i>Proceedings on Privacy Enhancing Technologies</i>, <i>2026</i>(4), 7–35. <a href=\"https://doi.org/10.56553/popets-2026-0108\">https://doi.org/10.56553/popets-2026-0108</a>","ieee":"J. Todt, E. Kablo, F. Morsbach, P. Arias Cabarcos, and T. Strufe, “‘The city isn’t uploading me to TikTok’: Exploring Privacy Attitudes towards Data Collection in Urban Public Spaces,” <i>Proceedings on Privacy Enhancing Technologies</i>, vol. 2026, no. 4, pp. 7–35, 2026, doi: <a href=\"https://doi.org/10.56553/popets-2026-0108\">10.56553/popets-2026-0108</a>."},"page":"7-35","publisher":"Privacy Enhancing Technologies Symposium Advisory Board","_id":"66638","user_id":"46433","volume":2026,"status":"public","date_created":"2026-08-03T10:46:58Z","type":"journal_article","department":[{"_id":"679"}],"publication":"Proceedings on Privacy Enhancing Technologies","issue":"4","abstract":[{"text":"Smart cities promise safer streets, smoother traffic, and more efficient services, enabled by dense networks of urban sensors. Yet this infrastructure, often unnoticed by citizens, introduces pervasive privacy risks, from tracking, profiling, and sensitive inferences to subtle forms of self-censorship. Despite widespread deployment, little is known about how the public understands and perceives these sensing systems. To address this gap, we present an intervention based user study (n = 172) in which participants are exposed to data collection by six urban sensors, including cameras and alternative technologies commonly framed as privacy-preserving. Participants encounter either the sensors alone or sensors accompanied by real-time data visualizations. Our results reveal widespread misunderstanding of some sensors (radar, LiDAR, Wi-Fi, depth, and thermal imaging sensors), particularly their capacity for identification and for attribute inferences such as gender or age. We also identify persistent misconceptions, including the belief that Wi-Fi poses privacy risks only when users connect to public networks. While making sensors visible and visualizing collected data improves privacy awareness, these measures alone are not enough for citizens to understand the actual risks of urban sensing. We derive recommendations for privacy-respecting smart city environments grounded in citizens’ informational needs and expectations.","lang":"eng"}],"main_file_link":[{"url":"https://petsymposium.org/popets/2026/popets-2026-0108.php","open_access":"1"}],"language":[{"iso":"eng"}],"doi":"10.56553/popets-2026-0108","year":"2026","title":"“The city isn’t uploading me to TikTok”: Exploring Privacy Attitudes towards Data Collection in Urban Public Spaces","publication_identifier":{"issn":["2299-0984"]},"author":[{"last_name":"Todt","first_name":"Julian","full_name":"Todt, Julian"},{"full_name":"Kablo, Emiram","last_name":"Kablo","first_name":"Emiram","id":"46433"},{"full_name":"Morsbach, Felix","first_name":"Felix","last_name":"Morsbach"},{"id":"92804","full_name":"Arias Cabarcos, Patricia","first_name":"Patricia","last_name":"Arias Cabarcos"},{"last_name":"Strufe","first_name":"Thorsten","full_name":"Strufe, Thorsten"}],"date_updated":"2026-08-03T10:49:58Z","publication_status":"published","intvolume":"      2026"},{"user_id":"92804","volume":2023,"page":"384-399","_id":"48061","publisher":"Privacy Enhancing Technologies Symposium Advisory Board","status":"public","citation":{"ieee":"P. Arias-Cabarcos, S. Khalili, and T. Strufe, “’Surprised, Shocked, Worried’}: User Reactions to Facebook Data Collection from Third Parties,” <i>Proceedings on Privacy Enhancing Technologies</i>, vol. 2023, no. 1, pp. 384–399, 2023, doi: <a href=\"https://doi.org/10.56553/popets-2023-0023\">10.56553/popets-2023-0023</a>.","apa":"Arias-Cabarcos, P., Khalili, S., &#38; Strufe, T. (2023). ’Surprised, Shocked, Worried’}: User Reactions to Facebook Data Collection from Third Parties. <i>Proceedings on Privacy Enhancing Technologies</i>, <i>2023</i>(1), 384–399. <a href=\"https://doi.org/10.56553/popets-2023-0023\">https://doi.org/10.56553/popets-2023-0023</a>","chicago":"Arias-Cabarcos, Patricia, Saina Khalili, and Thorsten Strufe. “’Surprised, Shocked, Worried’}: User Reactions to Facebook Data Collection from Third Parties.” <i>Proceedings on Privacy Enhancing Technologies</i> 2023, no. 1 (2023): 384–99. <a href=\"https://doi.org/10.56553/popets-2023-0023\">https://doi.org/10.56553/popets-2023-0023</a>.","short":"P. Arias-Cabarcos, S. Khalili, T. Strufe, Proceedings on Privacy Enhancing Technologies 2023 (2023) 384–399.","mla":"Arias-Cabarcos, Patricia, et al. “’Surprised, Shocked, Worried’}: User Reactions to Facebook Data Collection from Third Parties.” <i>Proceedings on Privacy Enhancing Technologies</i>, vol. 2023, no. 1, Privacy Enhancing Technologies Symposium Advisory Board, 2023, pp. 384–99, doi:<a href=\"https://doi.org/10.56553/popets-2023-0023\">10.56553/popets-2023-0023</a>.","bibtex":"@article{Arias-Cabarcos_Khalili_Strufe_2023, title={’Surprised, Shocked, Worried’}: User Reactions to Facebook Data Collection from Third Parties}, volume={2023}, DOI={<a href=\"https://doi.org/10.56553/popets-2023-0023\">10.56553/popets-2023-0023</a>}, number={1}, journal={Proceedings on Privacy Enhancing Technologies}, publisher={Privacy Enhancing Technologies Symposium Advisory Board}, author={Arias-Cabarcos, Patricia and Khalili, Saina and Strufe, Thorsten}, year={2023}, pages={384–399} }","ama":"Arias-Cabarcos P, Khalili S, Strufe T. ’Surprised, Shocked, Worried’}: User Reactions to Facebook Data Collection from Third Parties. <i>Proceedings on Privacy Enhancing Technologies</i>. 2023;2023(1):384-399. doi:<a href=\"https://doi.org/10.56553/popets-2023-0023\">10.56553/popets-2023-0023</a>"},"doi":"10.56553/popets-2023-0023","publication_status":"published","date_updated":"2023-10-14T12:13:32Z","intvolume":"      2023","year":"2023","title":"'Surprised, Shocked, Worried'}: User Reactions to Facebook Data Collection from Third Parties","author":[{"first_name":"Patricia","last_name":"Arias-Cabarcos","full_name":"Arias-Cabarcos, Patricia"},{"full_name":"Khalili, Saina","first_name":"Saina","last_name":"Khalili"},{"full_name":"Strufe, Thorsten","first_name":"Thorsten","last_name":"Strufe"}],"publication_identifier":{"issn":["2299-0984"]},"type":"journal_article","keyword":["General Medicine"],"date_created":"2023-10-14T12:10:31Z","abstract":[{"lang":"eng","text":"<jats:p>Data collection and aggregation by online services happens to an extent that is often beyond awareness and comprehension of its users. Transparency tools become crucial to inform people, though it is unclear how well they work. To investigate this matter, we conducted a user study focusing on Facebook, which has recently released the 'Off-Facebook Activity' transparency dashboard that informs about personal data collection from third parties. We exposed a group of n = 100 participants to the dashboard and surveyed their level of awareness and reactions to understand how transparency impacts users' privacy attitudes and  intended behavior. Our participants were surprised about the massive amount of collected data, became significantly less comfortable with data collection, and more likely to take protective measures.  Collaterally, we observed that current consent schemes are inadequate. Based on the survey findings, we make recommendations for more usable transparency and highlight the need to raise awareness about transparency tools and to provide easily actionable privacy controls.</jats:p>"}],"publication":"Proceedings on Privacy Enhancing Technologies","issue":"1"},{"file_date_updated":"2018-11-08T13:04:30Z","citation":{"ieee":"T. Jager and A. Rupp, “Black-Box Accumulation: Collecting Incentives in a Privacy-Preserving Way,” <i>Proceedings on Privacy Enhancing Technologies</i>, vol. 2016, no. 3, pp. 62–82, 2016.","mla":"Jager, Tibor, and Andy Rupp. “Black-Box Accumulation: Collecting Incentives in a Privacy-Preserving Way.” <i>Proceedings on Privacy Enhancing Technologies</i>, vol. 2016, no. 3, Walter de Gruyter GmbH, 2016, pp. 62–82, doi:<a href=\"https://doi.org/10.1515/popets-2016-0016\">10.1515/popets-2016-0016</a>.","apa":"Jager, T., &#38; Rupp, A. (2016). Black-Box Accumulation: Collecting Incentives in a Privacy-Preserving Way. <i>Proceedings on Privacy Enhancing Technologies</i>, <i>2016</i>(3), 62–82. <a href=\"https://doi.org/10.1515/popets-2016-0016\">https://doi.org/10.1515/popets-2016-0016</a>","bibtex":"@article{Jager_Rupp_2016, title={Black-Box Accumulation: Collecting Incentives in a Privacy-Preserving Way}, volume={2016}, DOI={<a href=\"https://doi.org/10.1515/popets-2016-0016\">10.1515/popets-2016-0016</a>}, number={3}, journal={Proceedings on Privacy Enhancing Technologies}, publisher={Walter de Gruyter GmbH}, author={Jager, Tibor and Rupp, Andy}, year={2016}, pages={62–82} }","ama":"Jager T, Rupp A. Black-Box Accumulation: Collecting Incentives in a Privacy-Preserving Way. <i>Proceedings on Privacy Enhancing Technologies</i>. 2016;2016(3):62-82. doi:<a href=\"https://doi.org/10.1515/popets-2016-0016\">10.1515/popets-2016-0016</a>","short":"T. Jager, A. Rupp, Proceedings on Privacy Enhancing Technologies 2016 (2016) 62–82.","chicago":"Jager, Tibor, and Andy Rupp. “Black-Box Accumulation: Collecting Incentives in a Privacy-Preserving Way.” <i>Proceedings on Privacy Enhancing Technologies</i> 2016, no. 3 (2016): 62–82. <a href=\"https://doi.org/10.1515/popets-2016-0016\">https://doi.org/10.1515/popets-2016-0016</a>."},"user_id":"38235","ddc":["006"],"volume":2016,"page":"62-82","publisher":"Walter de Gruyter GmbH","_id":"5446","has_accepted_license":"1","status":"public","type":"journal_article","department":[{"_id":"558"}],"file":[{"date_created":"2018-11-08T13:04:30Z","creator":"abirke","file_id":"5447","success":1,"content_type":"application/pdf","relation":"main_file","date_updated":"2018-11-08T13:04:30Z","file_name":"Black-Box_Accumulation__Collecting_Incentives_in_a_Privacy-Preserving_Way.pdf","access_level":"closed","file_size":750585}],"date_created":"2018-11-08T13:03:39Z","extern":"1","publication":"Proceedings on Privacy Enhancing Technologies","issue":"3","doi":"10.1515/popets-2016-0016","main_file_link":[{"url":"https://petsymposium.org/2016/files/papers/Black-Box_Accumulation__Collecting_Incentives_in_a_Privacy-Preserving_Way.pdf"}],"language":[{"iso":"eng"}],"publication_status":"published","date_updated":"2022-01-06T07:01:54Z","intvolume":"      2016","title":"Black-Box Accumulation: Collecting Incentives in a Privacy-Preserving Way","year":"2016","publication_identifier":{"issn":["2299-0984"]},"author":[{"id":"64669","last_name":"Jager","first_name":"Tibor","full_name":"Jager, Tibor"},{"last_name":"Rupp","first_name":"Andy","full_name":"Rupp, Andy"}]}]