{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,26]],"date-time":"2025-09-26T00:12:43Z","timestamp":1758845563953,"version":"3.41.0"},"reference-count":44,"publisher":"Association for Computing Machinery (ACM)","issue":"2","license":[{"start":{"date-parts":[[2017,10,10]],"date-time":"2017-10-10T00:00:00Z","timestamp":1507593600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["SIGSPATIAL Special"],"published-print":{"date-parts":[[2017,10,10]]},"abstract":"<jats:p>While a remarkable effort has been put in developing indoor spatial awareness systems, they are still isolated efforts that are tailored to specific deployments. A truly ubiquitous indoor spatial awareness system is envisioned to be deployed on a large scale worldwide, with minimum overhead, and to work with the heterogeneous IoT devices. Such a system will enable a wide set of new applications including worldwide seamless direction finding between indoor locations, anywhere anytime health monitoring, enhanced first responders' safety, and providing richer context for indoor mobile computing applications.<\/jats:p>\n          <jats:p>In this paper, we describe our vision and work towards achieving ubiquitous indoor spatial awareness systems as well as the open challenges that need to be addressed to materialize this dream.<\/jats:p>","DOI":"10.1145\/3151123.3151129","type":"journal-article","created":{"date-parts":[[2017,10,12]],"date-time":"2017-10-12T12:52:50Z","timestamp":1507812770000},"page":"36-43","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":11,"title":["Towards ubiquitous indoor spatial awareness on a worldwide scale"],"prefix":"10.1145","volume":"9","author":[{"given":"Moustafa","family":"Elhamshary","sequence":"first","affiliation":[{"name":"Egypt-Japan University of Science and Technology (E-JUST)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Moustafa","family":"Youssef","sequence":"additional","affiliation":[{"name":"Egypt-Japan University of Science and Technology (E-JUST)"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2017,10,10]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1145\/2746285.2755969"},{"volume-title":"Wigest: A ubiquitous WiFi-based gesture recognition system","year":"2015","author":"Abdelnasser H.","key":"e_1_2_1_2_1"},{"volume-title":"Magboard: Magnetic-based ubiquitous homomorphic off-the-shelf keyboard","year":"2016","author":"Abdelnasser H.","key":"e_1_2_1_3_1"},{"volume":"201","journal-title":"SemanticSLAM: Using environment landmarks for unsupervised indoor localization. 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