{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,7]],"date-time":"2026-03-07T16:06:01Z","timestamp":1772899561976,"version":"3.50.1"},"reference-count":28,"publisher":"Institute of Electrical and Electronics Engineers (IEEE)","license":[{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"}],"funder":[{"name":"Research Foundation\u2013Flanders (Fonds Wetenschappelijk Onderzoek) Passive Environment Sensing through Signals of Opportunity","award":["G018522N"],"award-info":[{"award-number":["G018522N"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IEEE Access"],"published-print":{"date-parts":[[2026]]},"DOI":"10.1109\/access.2026.3668914","type":"journal-article","created":{"date-parts":[[2026,2,27]],"date-time":"2026-02-27T20:50:25Z","timestamp":1772225425000},"page":"32992-33001","source":"Crossref","is-referenced-by-count":0,"title":["Exploring Presence Patterns in an Educational Setting Through Electromagnetic Activity"],"prefix":"10.1109","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-6764-1518","authenticated-orcid":false,"given":"Ruben","family":"Nietvelt","sequence":"first","affiliation":[{"name":"IDLab—imec, Faculty of Applied Engineering, University of Antwerp, Antwerp, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6262-8010","authenticated-orcid":false,"given":"Dennis","family":"Joosens","sequence":"additional","affiliation":[{"name":"IDLab—imec, Faculty of Applied Engineering, University of Antwerp, Antwerp, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1152-6617","authenticated-orcid":false,"given":"Maarten","family":"Weyn","sequence":"additional","affiliation":[{"name":"IDLab—imec, Faculty of Applied Engineering, University of Antwerp, Antwerp, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0064-5020","authenticated-orcid":false,"given":"Rafael","family":"Berkvens","sequence":"additional","affiliation":[{"name":"IDLab—imec, Faculty of Applied Engineering, University of Antwerp, Antwerp, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"263","reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2020.3010609"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1109\/WiMOB.2016.7763227"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1109\/JIOT.2020.3047868"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2018.2812887"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.1007\/s12243-025-01128-7"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1109\/MCE.2020.3032791"},{"key":"ref7","article-title":"Telegeography: Global internet bandwidth rose by 28% in 2022","author":"Weissberger","year":"2022"},{"key":"ref8","article-title":"Internet traffic and capacity remain brisk","author":"Brodsky","year":"2022"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.3390\/s23115183"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1109\/GCWkshps56602.2022.10008476"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1109\/ICCWorkshops57953.2023.10283484"},{"issue":"2","key":"ref12","first-page":"79","article-title":"Measuring the accuracy of crowd counting using Wi-Fi probe-request-frame counting technique","volume":"8","author":"Ooi","year":"2016","journal-title":"J. Telecommun."},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.1109\/TIM.2020.2969588"},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.1109\/JSAC.2015.2430272"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.11591\/eei.v10i3.3038"},{"key":"ref16","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2017.1700082"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1109\/INFOCOM.2014.6847958"},{"key":"ref18","doi-asserted-by":"publisher","DOI":"10.1145\/3424739"},{"key":"ref19","doi-asserted-by":"publisher","DOI":"10.1145\/3161183"},{"key":"ref20","doi-asserted-by":"publisher","DOI":"10.1109\/MeditCom64437.2025.11104432"},{"key":"ref21","doi-asserted-by":"publisher","DOI":"10.1109\/GCWkshps50303.2020.9367546"},{"key":"ref22","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2020.3006387"},{"key":"ref23","doi-asserted-by":"publisher","DOI":"10.1109\/JCS61227.2024.10646254"},{"key":"ref24","doi-asserted-by":"publisher","DOI":"10.1109\/ICMNWC52512.2021.9688506"},{"issue":"122","key":"ref25","first-page":"4","article-title":"GNU radio: Tools for exploring the radio frequency spectrum","volume":"2004","author":"Blossom","year":"2004","journal-title":"Linux J."},{"key":"ref26","doi-asserted-by":"publisher","DOI":"10.3390\/app10186183"},{"key":"ref27","doi-asserted-by":"publisher","DOI":"10.3390\/s20092624"},{"key":"ref28","doi-asserted-by":"publisher","DOI":"10.1201\/9781003367987"}],"container-title":["IEEE Access"],"original-title":[],"link":[{"URL":"http:\/\/xplorestaging.ieee.org\/ielx8\/6287639\/11323511\/11415595.pdf?arnumber=11415595","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T21:03:02Z","timestamp":1772830982000},"score":1,"resource":{"primary":{"URL":"https:\/\/ieeexplore.ieee.org\/document\/11415595\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026]]},"references-count":28,"URL":"https:\/\/doi.org\/10.1109\/access.2026.3668914","relation":{},"ISSN":["2169-3536"],"issn-type":[{"value":"2169-3536","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026]]}}}