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Spatial Algorithms Syst."],"published-print":{"date-parts":[[2022,9,30]]},"abstract":"<jats:p>\n            Mobile sensing has played a key role in providing digital solutions to aid with\n            <jats:italic>COVID-19<\/jats:italic>\n            containment policies, primarily to automate contact tracing and social distancing measures. As more and more countries reopen from lockdowns, there remains a pressing need to minimize crowd movements and interactions, particularly in enclosed spaces. Many\n            <jats:italic>COVID-19<\/jats:italic>\n            technology solutions leverage positioning systems, generally using Bluetooth and GPS, and can theoretically be adapted to monitor safety compliance within dedicated environments. However, they may not be the ideal modalities for indoor positioning. This article conjectures that analyzing user occupancy and mobility via deployed WiFi infrastructure can help institutions monitor and maintain safety compliance according to the public health guidelines. Using smartphones as a proxy for user location, our analysis demonstrates how coarse-grained WiFi data can sufficiently reflect the indoor occupancy spectrum when different\n            <jats:italic>COVID-19<\/jats:italic>\n            policies were enacted. Our work analyzes staff and students\u2019 mobility data from three university campuses. Two of these campuses are in Singapore, and the third is in the Northeastern United States. Our results show that online learning, split-team, and other space management policies effectively lower occupancy. However, they do not change the mobility for individuals transitioning between spaces. We demonstrate how this data source can be a practical application for institutional crowd control and discuss the implications of our findings for policymaking.\n          <\/jats:p>","DOI":"10.1145\/3516524","type":"journal-article","created":{"date-parts":[[2022,2,24]],"date-time":"2022-02-24T16:56:00Z","timestamp":1645721760000},"page":"1-26","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":8,"title":["Analyzing the Impact of COVID-19 Control Policies on Campus Occupancy and Mobility via WiFi Sensing"],"prefix":"10.1145","volume":"8","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4520-9783","authenticated-orcid":false,"given":"Camellia","family":"Zakaria","sequence":"first","affiliation":[{"name":"University of Massachusetts Amherst, Amherst, MA, USA"}]},{"given":"Amee","family":"Trivedi","sequence":"additional","affiliation":[{"name":"University of Massachusetts Amherst, Amherst, MA, USA"}]},{"given":"Emmanuel","family":"Cecchet","sequence":"additional","affiliation":[{"name":"University of Massachusetts Amherst, Amherst, MA, USA"}]},{"given":"Michael","family":"Chee","sequence":"additional","affiliation":[{"name":"Duke-NUS Medical School, Singapore"}]},{"given":"Prashant","family":"Shenoy","sequence":"additional","affiliation":[{"name":"University of Massachusetts Amherst, Amherst, MA, USA"}]},{"given":"Rajesh","family":"Balan","sequence":"additional","affiliation":[{"name":"Singapore Management University, Singapore"}]}],"member":"320","published-online":{"date-parts":[[2022,9,22]]},"reference":[{"key":"e_1_3_2_2_2","volume-title":"States Look to Closed Hospitals and College Dorms to Meet Coronavirus Demands","author":"News ABC","year":"2020","unstructured":"ABC News. 2020. 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