{"id":"https://openalex.org/W4220824987","doi":"https://doi.org/10.3390/s22062255","title":"Toward COVID-19 Contact Tracing though Wi-Fi Probes","display_name":"Toward COVID-19 Contact Tracing though Wi-Fi Probes","publication_year":2022,"publication_date":"2022-03-14","ids":{"openalex":"https://openalex.org/W4220824987","doi":"https://doi.org/10.3390/s22062255","pmid":"https://pubmed.ncbi.nlm.nih.gov/35336425"},"language":"en","primary_location":{"id":"doi:10.3390/s22062255","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s22062255","pdf_url":"https://www.mdpi.com/1424-8220/22/6/2255/pdf?version=1647269107","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/1424-8220/22/6/2255/pdf?version=1647269107","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5051125393","display_name":"Xu Yang","orcid":"https://orcid.org/0000-0002-2651-3432"},"institutions":[{"id":"https://openalex.org/I25757504","display_name":"China University of Mining and Technology","ror":"https://ror.org/01xt2dr21","country_code":"CN","type":"education","lineage":["https://openalex.org/I25757504"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xu Yang","raw_affiliation_strings":["School of Computer Science and Technology, China University of Mining and Technology, Xuzhou 221000, China"],"raw_orcid":"https://orcid.org/0000-0002-2651-3432","affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, China University of Mining and Technology, Xuzhou 221000, China","institution_ids":["https://openalex.org/I25757504"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5029252879","display_name":"Chenqi Shi","orcid":"https://orcid.org/0000-0001-5589-1582"},"institutions":[{"id":"https://openalex.org/I25757504","display_name":"China University of Mining and Technology","ror":"https://ror.org/01xt2dr21","country_code":"CN","type":"education","lineage":["https://openalex.org/I25757504"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Chenqi Shi","raw_affiliation_strings":["School of Computer Science and Technology, China University of Mining and Technology, Xuzhou 221000, China"],"raw_orcid":"https://orcid.org/0000-0001-5589-1582","affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, China University of Mining and Technology, Xuzhou 221000, China","institution_ids":["https://openalex.org/I25757504"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5044391608","display_name":"Peihao Li","orcid":"https://orcid.org/0000-0002-5576-6543"},"institutions":[{"id":"https://openalex.org/I25757504","display_name":"China University of Mining and Technology","ror":"https://ror.org/01xt2dr21","country_code":"CN","type":"education","lineage":["https://openalex.org/I25757504"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Peihao Li","raw_affiliation_strings":["School of Computer Science and Technology, China University of Mining and Technology, Xuzhou 221000, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, China University of Mining and Technology, Xuzhou 221000, China","institution_ids":["https://openalex.org/I25757504"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5013474497","display_name":"Yuqing Yin","orcid":"https://orcid.org/0000-0002-3296-4256"},"institutions":[{"id":"https://openalex.org/I25757504","display_name":"China University of Mining and Technology","ror":"https://ror.org/01xt2dr21","country_code":"CN","type":"education","lineage":["https://openalex.org/I25757504"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yuqing Yin","raw_affiliation_strings":["School of Computer Science and Technology, China University of Mining and Technology, Xuzhou 221000, China"],"raw_orcid":"https://orcid.org/0000-0002-3296-4256","affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, China University of Mining and Technology, Xuzhou 221000, China","institution_ids":["https://openalex.org/I25757504"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101892517","display_name":"Qiang Niu","orcid":"https://orcid.org/0000-0003-1198-0158"},"institutions":[{"id":"https://openalex.org/I25757504","display_name":"China University of Mining and Technology","ror":"https://ror.org/01xt2dr21","country_code":"CN","type":"education","lineage":["https://openalex.org/I25757504"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qiang Niu","raw_affiliation_strings":["School of Computer Science and Technology, China University of Mining and Technology, Xuzhou 221000, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, China University of Mining and Technology, Xuzhou 221000, China","institution_ids":["https://openalex.org/I25757504"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5029252879"],"corresponding_institution_ids":["https://openalex.org/I25757504"],"apc_list":{"value":2400,"currency":"CHF","value_usd":2673},"apc_paid":{"value":2400,"currency":"CHF","value_usd":2673},"fwci":0.1488,"has_fulltext":true,"cited_by_count":2,"citation_normalized_percentile":{"value":0.3771049,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":95},"biblio":{"volume":"22","issue":"6","first_page":"2255","last_page":"2255"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11980","display_name":"Human Mobility and Location-Based Analysis","score":0.9884999990463257,"subfield":{"id":"https://openalex.org/subfields/3313","display_name":"Transportation"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11158","display_name":"Wireless Networks and Protocols","score":0.9876000285148621,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/contact-tracing","display_name":"Contact tracing","score":0.853787899017334},{"id":"https://openalex.org/keywords/coronavirus-disease-2019","display_name":"Coronavirus disease 2019 (COVID-19)","score":0.7991061210632324},{"id":"https://openalex.org/keywords/similarity","display_name":"Similarity (geometry)","score":0.6397004127502441},{"id":"https://openalex.org/keywords/severe-acute-respiratory-syndrome-coronavirus-2","display_name":"Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)","score":0.627993106842041},{"id":"https://openalex.org/keywords/tracing","display_name":"Tracing","score":0.6126833558082581},{"id":"https://openalex.org/keywords/location-data","display_name":"Location data","score":0.6116245985031128},{"id":"https://openalex.org/keywords/2019-20-coronavirus-outbreak","display_name":"2019-20 coronavirus outbreak","score":0.5407692193984985},{"id":"https://openalex.org/keywords/range","display_name":"Range (aeronautics)","score":0.5386308431625366},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5236772894859314},{"id":"https://openalex.org/keywords/property","display_name":"Property (philosophy)","score":0.455517441034317},{"id":"https://openalex.org/keywords/simulation","display_name":"Simulation","score":0.34630465507507324},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.29608309268951416},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.2954418957233429},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.24225327372550964},{"id":"https://openalex.org/keywords/virology","display_name":"Virology","score":0.1359272599220276},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.1173311173915863},{"id":"https://openalex.org/keywords/aerospace-engineering","display_name":"Aerospace engineering","score":0.10770946741104126},{"id":"https://openalex.org/keywords/outbreak","display_name":"Outbreak","score":0.080390065908432}],"concepts":[{"id":"https://openalex.org/C113162765","wikidata":"https://www.wikidata.org/wiki/Q1128437","display_name":"Contact tracing","level":5,"score":0.853787899017334},{"id":"https://openalex.org/C3008058167","wikidata":"https://www.wikidata.org/wiki/Q84263196","display_name":"Coronavirus disease 2019 (COVID-19)","level":4,"score":0.7991061210632324},{"id":"https://openalex.org/C103278499","wikidata":"https://www.wikidata.org/wiki/Q254465","display_name":"Similarity (geometry)","level":3,"score":0.6397004127502441},{"id":"https://openalex.org/C3007834351","wikidata":"https://www.wikidata.org/wiki/Q82069695","display_name":"Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)","level":5,"score":0.627993106842041},{"id":"https://openalex.org/C138673069","wikidata":"https://www.wikidata.org/wiki/Q322229","display_name":"Tracing","level":2,"score":0.6126833558082581},{"id":"https://openalex.org/C2988186277","wikidata":"https://www.wikidata.org/wiki/Q5915793","display_name":"Location data","level":2,"score":0.6116245985031128},{"id":"https://openalex.org/C3006700255","wikidata":"https://www.wikidata.org/wiki/Q81068910","display_name":"2019-20 coronavirus outbreak","level":3,"score":0.5407692193984985},{"id":"https://openalex.org/C204323151","wikidata":"https://www.wikidata.org/wiki/Q905424","display_name":"Range (aeronautics)","level":2,"score":0.5386308431625366},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5236772894859314},{"id":"https://openalex.org/C189950617","wikidata":"https://www.wikidata.org/wiki/Q937228","display_name":"Property (philosophy)","level":2,"score":0.455517441034317},{"id":"https://openalex.org/C44154836","wikidata":"https://www.wikidata.org/wiki/Q45045","display_name":"Simulation","level":1,"score":0.34630465507507324},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.29608309268951416},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.2954418957233429},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.24225327372550964},{"id":"https://openalex.org/C159047783","wikidata":"https://www.wikidata.org/wiki/Q7215","display_name":"Virology","level":1,"score":0.1359272599220276},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.1173311173915863},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.10770946741104126},{"id":"https://openalex.org/C116675565","wikidata":"https://www.wikidata.org/wiki/Q3241045","display_name":"Outbreak","level":2,"score":0.080390065908432},{"id":"https://openalex.org/C524204448","wikidata":"https://www.wikidata.org/wiki/Q788926","display_name":"Infectious disease (medical specialty)","level":3,"score":0.0},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.0},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.0},{"id":"https://openalex.org/C2779134260","wikidata":"https://www.wikidata.org/wiki/Q12136","display_name":"Disease","level":2,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D000086382","descriptor_name":"COVID-19","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D000086382","descriptor_name":"COVID-19","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D000086382","descriptor_name":"COVID-19","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D003625","descriptor_name":"Data Collection","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D003625","descriptor_name":"Data Collection","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D003625","descriptor_name":"Data Collection","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012574","descriptor_name":"Schools","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012574","descriptor_name":"Schools","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012574","descriptor_name":"Schools","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016358","descriptor_name":"Contact Tracing","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":true},{"descriptor_ui":"D016358","descriptor_name":"Contact Tracing","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":true},{"descriptor_ui":"D016358","descriptor_name":"Contact Tracing","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":true}],"locations_count":5,"locations":[{"id":"doi:10.3390/s22062255","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s22062255","pdf_url":"https://www.mdpi.com/1424-8220/22/6/2255/pdf?version=1647269107","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},{"id":"pmid:35336425","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/35336425","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors (Basel, Switzerland)","raw_type":null},{"id":"pmh:oai:doaj.org/article:f7c3414e77b949d18d3da1ff7cc51a56","is_oa":true,"landing_page_url":"https://doaj.org/article/f7c3414e77b949d18d3da1ff7cc51a56","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors, Vol 22, Iss 6, p 2255 (2022)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/1424-8220/22/6/2255/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/s22062255","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors; Volume 22; Issue 6; Pages: 2255","raw_type":"Text"},{"id":"pmh:oai:pubmedcentral.nih.gov:8949136","is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/8949136","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors (Basel)","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/s22062255","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s22062255","pdf_url":"https://www.mdpi.com/1424-8220/22/6/2255/pdf?version=1647269107","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4220824987.pdf","grobid_xml":"https://content.openalex.org/works/W4220824987.grobid-xml"},"referenced_works_count":45,"referenced_works":["https://openalex.org/W1987142574","https://openalex.org/W1989115430","https://openalex.org/W2007920345","https://openalex.org/W2042280593","https://openalex.org/W2066961254","https://openalex.org/W2097531960","https://openalex.org/W2118051615","https://openalex.org/W2129045955","https://openalex.org/W2129443297","https://openalex.org/W2147628505","https://openalex.org/W2476314115","https://openalex.org/W2476406844","https://openalex.org/W2509382177","https://openalex.org/W2522624697","https://openalex.org/W2552024864","https://openalex.org/W2611241975","https://openalex.org/W2749809371","https://openalex.org/W2756172860","https://openalex.org/W2788489461","https://openalex.org/W2790688089","https://openalex.org/W2804504693","https://openalex.org/W2820000974","https://openalex.org/W2847339044","https://openalex.org/W2865154361","https://openalex.org/W2897132279","https://openalex.org/W2910710468","https://openalex.org/W2934563761","https://openalex.org/W2950821050","https://openalex.org/W2952065976","https://openalex.org/W2961367025","https://openalex.org/W2962319395","https://openalex.org/W2964988056","https://openalex.org/W2968303571","https://openalex.org/W2968574621","https://openalex.org/W2982474461","https://openalex.org/W3010131837","https://openalex.org/W3010205642","https://openalex.org/W3018055328","https://openalex.org/W3021587713","https://openalex.org/W3045397493","https://openalex.org/W3103144676","https://openalex.org/W3131762034","https://openalex.org/W4253510307","https://openalex.org/W6635170509","https://openalex.org/W6997443261"],"related_works":["https://openalex.org/W3130225502","https://openalex.org/W3158100496","https://openalex.org/W3206978831","https://openalex.org/W2170160357","https://openalex.org/W4287554683","https://openalex.org/W2012140923","https://openalex.org/W2131420021","https://openalex.org/W2822791719","https://openalex.org/W4200061232","https://openalex.org/W4390411751"],"abstract_inverted_index":{"COVID-19":[0,41,50],"is":[1,27,57,69],"currently":[2],"the":[3,21,34,65,97],"biggest":[4],"threat":[5],"that":[6],"challenges":[7],"all":[8],"of":[9,24,33,104],"humankind's":[10],"health":[11],"and":[12,16,81,96],"property.":[13],"One":[14],"promising":[15],"effective":[17],"way":[18],"to":[19,48,63,130],"control":[20],"rapid":[22],"spreading":[23],"this":[25],"infection":[26],"searching":[28,46],"for":[29,126],"primary":[30],"close":[31,52,82,114,133],"contacts":[32],"confirmed":[35],"cases.":[36],"In":[37],"response,":[38],"we":[39,120],"propose":[40],"Tracer,":[42],"a":[43,92,123,127],"low-cost":[44],"passive":[45],"system":[47,125],"find":[49,131],"patients'":[51],"contacts.":[53,115,134],"The":[54],"main":[55],"idea":[56],"utilizing":[58],"ubiquitous":[59],"WiFi":[60],"probe":[61],"requests":[62],"describe":[64],"location":[66,78],"similarity,":[67],"which":[68],"then":[70],"achieved":[71],"by":[72],"two":[73],"designed":[74],"range-free":[75],"judgment":[76],"indicators:":[77],"similarity":[79],"coefficient":[80],"contact":[83],"distance.":[84],"We":[85],"have":[86,121],"carried":[87],"out":[88],"extensive":[89],"experiments":[90],"in":[91,112],"school":[93,128],"office":[94],"building,":[95],"experimental":[98],"results":[99],"show":[100],"an":[101],"average":[102],"accuracy":[103],"more":[105],"than":[106],"98%,":[107],"demonstrating":[108],"our":[109],"system's":[110],"effectiveness":[111],"judging":[113],"Last":[116],"but":[117],"not":[118],"least,":[119],"developed":[122],"prototype":[124],"building":[129],"potential":[132]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":1}],"updated_date":"2026-07-22T07:51:19.307946","created_date":"2025-10-10T00:00:00"}