{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,15]],"date-time":"2026-01-15T22:35:00Z","timestamp":1768516500806,"version":"3.49.0"},"reference-count":67,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2014,3,20]],"date-time":"2014-03-20T00:00:00Z","timestamp":1395273600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The Ambient Assisted Living (AAL) area is in constant evolution, providing new technologies to users and enhancing the level of security and comfort that is ensured by house platforms. The Ambient Assisted Living for All (AAL4ALL) project aims to develop a new AAL concept, supported on a unified ecosystem and certification process that enables a heterogeneous environment. The concepts of Intelligent Environments, Ambient Intelligence, and the foundations of the Ambient Assisted Living are all presented in the framework of this project. In this work, we consider a specific platform developed in the scope of AAL4ALL, called UserAccess. The architecture of the platform and its role within the overall AAL4ALL concept, the implementation of the platform, and the available interfaces are presented. In addition, its feasibility is validated through a series of tests.<\/jats:p>","DOI":"10.3390\/s140305654","type":"journal-article","created":{"date-parts":[[2014,3,20]],"date-time":"2014-03-20T12:06:02Z","timestamp":1395317162000},"page":"5654-5676","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":31,"title":["A Caregiver Support Platform within the Scope of an  Ambient Assisted Living Ecosystem"],"prefix":"10.3390","volume":"14","author":[{"given":"Angelo","family":"Costa","sequence":"first","affiliation":[{"name":"CCTC-Computer Science and Technology Center, University of Minho, Braga 4710-057, Portugal"}]},{"given":"Paulo","family":"Novais","sequence":"additional","affiliation":[{"name":"CCTC-Computer Science and Technology Center, University of Minho, Braga 4710-057, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3097-8849","authenticated-orcid":false,"given":"Ricardo","family":"Simoes","sequence":"additional","affiliation":[{"name":"Institute for Polymers and Composites\u2014IPC\/I3N, University of Minho, Campus de Azur\u00e9m, Guimar\u00e3es 4800-058, Portugal"},{"name":"Life and Health Sciences Research Institute (ICVS), School of Health Sciences,  University of Minho, Campus de Gualtar, Braga 4710-057, Portugal"},{"name":"Polytechnic Institute of Cavado and Ave, Campus do IPCA, Barcelos 4750-810, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2014,3,20]]},"reference":[{"key":"ref_1","unstructured":"Cozza, R., Milanesi, C., Zimmermann, A., Glenn, D., Gupta, A., de La Vergne, H.J., Lu, C., Sato, A., Huy, T., and Shen, S. (2011). Market Share: Mobile Communication Devices by Region and Country, 3Q11, Gartner, Inc."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"459","DOI":"10.1046\/j.1365-2524.2003.00451.x","article-title":"Next generation telecare and its role in primary and community care","volume":"11","author":"Brown","year":"2003","journal-title":"Health Soc. Care Community"},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Jorge, J.A. (2001, January 22\u201325). Adaptive tools for the elderly. Alca cer do Sal, Portugal.","DOI":"10.1145\/564526.564544"},{"key":"ref_4","unstructured":"Mulvenna, M., Bergvall-K\u00e5reborn, B., Wallace, J., Galbraith, B., and Martin, S. (2010, January 27\u201329). Living labs as engagement models for innovation. Warsaw, Poland."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"73","DOI":"10.1007\/s10845-009-0279-5","article-title":"A novel agent-based concept of household appliances","volume":"22","author":"Steblovnik","year":"2009","journal-title":"J. Intell. Manuf."},{"key":"ref_6","unstructured":"Bahadori, S., Cesta, A., Iocchi, L., Leone, G.R., Nardi, D., Pecora, F., Rasconi, R., and Scozzafava, L. (2005). Ambient Intelligence, Springer."},{"key":"ref_7","unstructured":"Russell, S., and Norvig, P. (1995). Artificial Intelligence: A Modern Approach, Prentice Hall. [2nd ed.]."},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Augusto, J.C., Callaghan, V., Cook, D., Kameas, A., and Satoh, I. (2013). Intelligent Environments: A manifesto. Hum. Centric Comput. Inf. Sci., 3.","DOI":"10.1186\/2192-1962-3-12"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"17292","DOI":"10.3390\/s131217292","article-title":"Mobile sensing systems","volume":"13","author":"Macias","year":"2013","journal-title":"Sensors"},{"key":"ref_10","first-page":"835","article-title":"Context-based scene recognition from visual data in smart homes: An Information Fusion approach","volume":"16","author":"Serrano","year":"2011","journal-title":"Pers. Ubiquitous Comput."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"620","DOI":"10.1007\/s10489-012-0390-8","article-title":"Bringing context-aware access to the web through spoken interaction","volume":"38","author":"Griol","year":"2012","journal-title":"Appl. Intell."},{"key":"ref_12","first-page":"285","article-title":"Ambient Intelligence\u2014A State of the Art from Artificial Intelligence Perspective","volume":"Volume 4874","author":"Neves","year":"2007","journal-title":"Progress in Artificial Intelligence"},{"key":"ref_13","unstructured":"Augusto, J. (2008). Software and Data Technologies, Springer."},{"key":"ref_14","first-page":"112","article-title":"A Generic Topology for Ambient Intelligence","volume":"3295","author":"Hellenschmidt","year":"2004","journal-title":"Intelligence"},{"key":"ref_15","unstructured":"Cesta, A., Cortellessa, G., Giuliani, M.V., Iocchi, L., Leone, G.R., Nardi, D., Pecora, F., Rasconi, R., Scopelliti, M., and Tiberio, L. (2004). Ambient Intelligence, Springer."},{"key":"ref_16","unstructured":"(2012). Portugal in Figures\u20142010, Instituto Nacional de Estat\u00edstica."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"205","DOI":"10.1016\/j.eurger.2010.07.003","article-title":"A global perspective on population ageing","volume":"1","author":"Beard","year":"2010","journal-title":"Eur. Geriatr. Med."},{"key":"ref_18","unstructured":"United Nations (2009). World Population Ageing, United Nations."},{"key":"ref_19","unstructured":"(2002). World Population Ageing 1950\u20132050 (Population Studies Series), United Nations."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Sun, H., de Florio, V., Gui, N., and Blondia, C. (2009, January 27\u201329). Promises and Challenges of Ambient Assisted Living Systems. Las Vegas, NV, USA.","DOI":"10.1109\/ITNG.2009.169"},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Kurschl, W., Mitsch, S., and Sch\u00f6nb\u00f6ck, J. (2009, January 27\u201329). Modeling Situation-Aware Ambient Assisted Living Systems for Eldercare. Las Vegas, NV, USA.","DOI":"10.1109\/ITNG.2009.25"},{"key":"ref_22","first-page":"15","article-title":"Towards evolutionary ambient assisted living systems","volume":"1","author":"Muldoon","year":"2009","journal-title":"J. Ambient Intell. Hum. Comput."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"8136","DOI":"10.1016\/j.eswa.2012.01.153","article-title":"Ambient Assisted Living system for in-home monitoring of healthy independent elders","volume":"39","author":"Botia","year":"2012","journal-title":"Expert Syst. Appl."},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Nehmer, J., Becker, M., Karshmer, A., and Lamm, R. (2006, January 20\u201328). Living assistance systems: An ambient intelligence approach. New York, NY, USA.","DOI":"10.1145\/1134285.1134293"},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Ros\u00e1rio, R., Ara\u00fajo, A., Oliveira, B., Padr\u00e3o, P., Lopes, O., Teixeira, V., Moreira, A., Barros, R., Pereira, B., and Moreira, P. (2012). The impact of an intervention taught by trained teachers on childhood fruit and vegetable intake: A randomized trial. J. Obes., 2012.","DOI":"10.1155\/2012\/342138"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"179","DOI":"10.3233\/AIS-2010-0059","article-title":"Inter-organization cooperation for ambient assisted living","volume":"2","author":"Novais","year":"2010","journal-title":"J. Ambient Intell. Smart Environ."},{"key":"ref_27","first-page":"215","article-title":"Body area network for wireless patient monitoring","volume":"2","author":"Micallef","year":"2008","journal-title":"Eng. Technol."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"362","DOI":"10.4103\/0256-4602.83556","article-title":"Wireless Body Area Network for Medical Healthcare","volume":"28","author":"Jain","year":"2011","journal-title":"IETE Techni. Rev."},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Waluyo, A.B., Ying, S., Pek, I., and Wu, J.K. (2007, January 27\u201330). Middleware for Wireless Medical Body Area Network.","DOI":"10.1109\/BIOCAS.2007.4463339"},{"key":"ref_30","first-page":"1","article-title":"A survey on wireless body area networks","volume":"17","author":"Braem","year":"2010","journal-title":"Wirel. Netw."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"229","DOI":"10.3414\/ME9115","article-title":"An open and reconfigurable wireless sensor network for pervasive health monitoring","volume":"47","author":"Triantafyllidis","year":"2008","journal-title":"Methods Inf. Med."},{"key":"ref_32","doi-asserted-by":"crossref","unstructured":"Wolf, L., and Saadaoui, S. (2007, January 11\u201313). Architecture Concept of a Wireless Body Area Sensor Network for Health Monitoring of Elderly People. Las Vegas, NV, USA.","DOI":"10.1109\/CCNC.2007.147"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"16512","DOI":"10.3390\/s131216512","article-title":"R2NA: Received Signal Strength (RSS) Ratio-Based Node Authentication for Body Area Network","volume":"13","author":"Wu","year":"2013","journal-title":"Sensors"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"12473","DOI":"10.3390\/s120912473","article-title":"Unobstructive Body Area Networks (BAN) for efficient movement monitoring","volume":"12","author":"Felisberto","year":"2012","journal-title":"Sensors"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"49","DOI":"10.1016\/j.neucom.2012.03.023","article-title":"Privacy-by-design rules in face recognition system","volume":"109","author":"Pedraza","year":"2013","journal-title":"Neurocomputing"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"315","DOI":"10.1093\/jigpal\/jzq029","article-title":"Group decision making and Quality-of-Information in e-Health systems","volume":"19","author":"Lima","year":"2010","journal-title":"Logic J. IGPL"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"12192","DOI":"10.1016\/j.eswa.2012.04.058","article-title":"Sensor-driven agenda for intelligent home care of the elderly","volume":"39","author":"Costa","year":"2012","journal-title":"Expert Syst. Appl."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"15","DOI":"10.1109\/MIS.2008.19","article-title":"Ambient Intelligence\u2014The Next Step for Artificial Intelligence","volume":"23","author":"Ramos","year":"2008","journal-title":"IEEE Intell. Syst."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"52","DOI":"10.1007\/978-3-642-23771-3_5","article-title":"Smart Homes or Smart Occupants? Supporting Aware Living in the Home","volume":"Volume 6947","author":"Bartram","year":"2011","journal-title":"Human-Computer Interaction\u2014INTERACT 2011"},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1007\/978-3-642-23771-3_8","article-title":"Exercise Support System for Elderly: Multi-sensor Physiological State Detection and Usability Testing","volume":"Volume 6947","author":"Macek","year":"2011","journal-title":"Human-Computer Interaction\u2014INTERACT 2011"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"186","DOI":"10.1007\/978-3-642-23771-3_15","article-title":"Study on the Usability of a Haptic Menu for 3D Interaction","volume":"Volume 6947","author":"Caruso","year":"2011","journal-title":"Human-Computer Interaction\u2014INTERACT 2011"},{"key":"ref_42","doi-asserted-by":"crossref","unstructured":"Myers, B., Repenning, A., Lucas, P., van Roggen, W., Cypher, A., Dove, A., and Brandes, O. (2011, January 18\u201322). Successful visual and end-user programming systems from industry. Pittsburgh, PA, USA.","DOI":"10.1109\/VLHCC.2011.6070427"},{"key":"ref_43","doi-asserted-by":"crossref","unstructured":"Murphy-Hill, E., Ayazifar, M., and Black, A.P. (2011, January 18\u201322). Restructuring software with gestures. In 2011 IEEE Symposium on Visual Languages and Human-Centric Computing (VL\/HCC). Pittsburgh, PA, USA.","DOI":"10.1109\/VLHCC.2011.6070394"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"213","DOI":"10.1007\/978-1-84628-943-9_11","article-title":"Ambient Intelligence: The Confluence of Ubiquitous\/Pervasive Computing and Artificial Intelligence","volume":"5","author":"Augusto","year":"2007","journal-title":"Intelligent Computing Everywhere"},{"key":"ref_45","first-page":"123","article-title":"New paradigms in telemedicine: Ambient intelligence, wearable, pervasive and personalized","volume":"108","author":"Rubel","year":"2004","journal-title":"Stud. Health Technol. Inform."},{"key":"ref_46","unstructured":"Gir\u00e1ldez, M.C., and Casal, C.R. (2005). Ambient Intelligence: The Evolution of Technology, Communication and Cognition Towards the Future of Human-Computer Interaction, IOS Press."},{"key":"ref_47","unstructured":"Riva, G., Vatalaro, F., and Davide, F. (2005). Ambient intelligence: The Evolution of Technology, Communication and Cognition Towards the Future of Human-Computer Interaction, IOS Press."},{"key":"ref_48","unstructured":"Canalys Google's Android Becomes the World'S Leading Smart Phone Platform. Available online: http:\/\/www.canalys.com\/newsroom\/google?s-android-becomes-world?s-leading-smart-phone-platform."},{"key":"ref_49","unstructured":"Nielsen Wire May 2011: Top U.S. Web Brands. Available online: http:\/\/blog.nielsen.com\/nielsenwire\/online_mobile\/may-2011-top-u-s-web-brands."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"6995","DOI":"10.3390\/s120606995","article-title":"Ubiquitous mobile knowledge construction in collaborative learning environments","volume":"12","author":"Baloian","year":"2012","journal-title":"Sensors"},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"59","DOI":"10.1007\/978-3-319-00563-8_8","article-title":"Geo-localization System for People with Cognitive Disabilities","volume":"Voluem 221","author":"Ramos","year":"2013","journal-title":"Trends in Practical Applications of Agents and Multiagent Systems"},{"key":"ref_52","doi-asserted-by":"crossref","unstructured":"Liu, A.L., Hile, H., Borriello, G., Kautz, H., Brown, P.A., Harniss, M., and Johnson, K. (2009, January 1\u20133). Informing the design of an automated wayfinding system for individuals with cognitive impairments. London, UK.","DOI":"10.4108\/ICST.PERVASIVEHEALTH2009.6018"},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"1055","DOI":"10.1016\/j.comcom.2007.12.031","article-title":"Location-based services for elderly and disabled people","volume":"31","author":"Marco","year":"2008","journal-title":"Comput. Commun."},{"key":"ref_54","unstructured":"Pu, C.-C., Pu, C.-H., and Lee, H.-J. (2011). Emerging Communications for Wireless Sensor Networks, InTech."},{"key":"ref_55","doi-asserted-by":"crossref","unstructured":"Losada, M., Zamora-Cadenas, L., Alvarado, U., and Velez, I. (2011, January 14\u201316). Performance of an IEEE 802.15.4a ranging system in multipath indoor environments. Bologna, Italy.","DOI":"10.1109\/ICUWB.2011.6058885"},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"39","DOI":"10.1016\/j.adhoc.2012.04.006","article-title":"An integrated system based on wireless sensor networks for patient monitoring, localization and tracking","volume":"11","author":"Redondi","year":"2013","journal-title":"Ad Hoc Netw."},{"key":"ref_57","first-page":"705","article-title":"Robust Object Recognition in Unstructured Environments","volume":"Volume 1","year":"2012","journal-title":"Intelligent Autonomous Systems 12"},{"key":"ref_58","doi-asserted-by":"crossref","unstructured":"Mart\u00ednez-Mart\u00edn, E., and del Pobil, A.P. (2012). Robust Motion Detection in Real-Life Scenarios, Springer.","DOI":"10.1007\/978-1-4471-4216-4"},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"6982","DOI":"10.1016\/j.eswa.2012.01.050","article-title":"Human activity monitoring by local and global finite state machines","volume":"39","author":"Castillo","year":"2012","journal-title":"Expert Syst. Appl."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"113","DOI":"10.1007\/978-3-642-28762-6_14","article-title":"A Meta-model-Based Tool for Developing Monitoring and Activity Interpretation Systems","volume":"Volume 156","author":"Castillo","year":"2012","journal-title":"Highlights on Practical Applications of Agents and Multi-Agent Systems"},{"key":"ref_61","doi-asserted-by":"crossref","unstructured":"Terroso, M., Rosa, N., Torres Marques, A., and Simoes, R. (2013). Physical consequences of falls in the elderly: A literature review from 1995 to 2010. Eur. Rev. Aging Phys. Act.","DOI":"10.1007\/s11556-013-0134-8"},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"7203","DOI":"10.1016\/j.eswa.2013.07.028","article-title":"SVM-based posture identification with a single waist-located triaxial accelerometer","volume":"40","author":"Cabestany","year":"2013","journal-title":"Expert Syst. Appl."},{"key":"ref_63","doi-asserted-by":"crossref","unstructured":"Gjoreski, H., Lustrek, M., and Gams, M. (2011, January 25\u201328). Accelerometer Placement for Posture Recognition and Fall Detection. In 2011 Seventh International Conference on Intelligent Environments. Nottingham, UK.","DOI":"10.1109\/IE.2011.11"},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"1662","DOI":"10.1016\/j.eswa.2012.09.004","article-title":"Elderly activities recognition and classification for applications in assisted living","volume":"40","author":"Chernbumroong","year":"2013","journal-title":"Expert Syst. Appl."},{"key":"ref_65","unstructured":"AAL4ALL. Available online: http:\/\/www.aal4all.org\/."},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"1","DOI":"10.4018\/jehmc.2013040101","article-title":"Information and Technology Implementation Issues in AAL Solutions","volume":"4","author":"Vardasca","year":"2013","journal-title":"Int. J. E Health Med. Commun."},{"key":"ref_67","doi-asserted-by":"crossref","first-page":"71","DOI":"10.1007\/978-3-642-40846-5_8","article-title":"Clinical Careflows Aided by Uncertainty Representation Models","volume":"Volume 8073","author":"Oliveira","year":"2013","journal-title":"Hybrid Artificial Intelligent Systems"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/14\/3\/5654\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T21:09:26Z","timestamp":1760216966000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/14\/3\/5654"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014,3,20]]},"references-count":67,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2014,3]]}},"alternative-id":["s140305654"],"URL":"https:\/\/doi.org\/10.3390\/s140305654","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2014,3,20]]}}}