{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,3]],"date-time":"2026-03-03T08:22:29Z","timestamp":1772526149486,"version":"3.50.1"},"reference-count":84,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2021,3,17]],"date-time":"2021-03-17T00:00:00Z","timestamp":1615939200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The Internet of Things (IoT) is a leading trend with numerous opportunities accompanied by advantages as well as disadvantages. Parallel with IoT development, significant privacy and personal data protection challenges are also growing. In this regard, the General Data Protection Regulation (GDPR) is often considered the world\u2019s strongest set of data protection rules and has proven to be a catalyst for many countries around the world. The concepts and interaction of the data controller, the joint controllers, and the data processor play a key role in the implementation of the GDPR. Therefore, clarifying the blurred IoT actors\u2019 relationships to determine corresponding responsibilities is necessary. Given the IoT transformation reflected in shifting computing power from cloud to the edge, in this research we have considered how these computing paradigms are affecting IoT actors. In this regard, we have introduced identification of IoT actors according to a new five-computing layer IoT model based on the cloud, fog, edge, mist, and dew computing. Our conclusion is that identifying IoT actors in the light of the corresponding IoT data manager roles could be useful in determining the responsibilities of IoT actors for their compliance with data protection and privacy rules.<\/jats:p>","DOI":"10.3390\/s21062093","type":"journal-article","created":{"date-parts":[[2021,3,17]],"date-time":"2021-03-17T05:43:26Z","timestamp":1615959806000},"page":"2093","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Identification of IoT Actors"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1204-6175","authenticated-orcid":false,"given":"Suada","family":"Hadzovic","sequence":"first","affiliation":[{"name":"Faculty of Electrical Engineering, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9783-4818","authenticated-orcid":false,"given":"Sasa","family":"Mrdovic","sequence":"additional","affiliation":[{"name":"Faculty of Electrical Engineering, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9670-2431","authenticated-orcid":false,"given":"Milutin","family":"Radonjic","sequence":"additional","affiliation":[{"name":"Faculty of Electrical Engineering, University of Montenegro, 81000 Podgorica, Montenegro"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,3,17]]},"reference":[{"key":"ref_1","unstructured":"(2021, March 01). Cisco Annual Internet Report (2018\u20132023) White Paper. Available online: https:\/\/www.cisco.com\/c\/en\/us\/solutions\/collateral\/executive-perspectives\/annual-internet-report\/white-paper-c11-741490.html."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Ibarra-Esquer, J.E., Gonz\u00e1lez-Navarro, F.F., Flores-Rios, B.L., Burtseva, L., and Astorga-Vargas, M.A. (2017). Tracking the Evolution of the Internet of Things Concept Across Different Application Domains. Sensors, 17.","DOI":"10.3390\/s17061379"},{"key":"ref_3","unstructured":"(2021, March 01). IEEE Internet of Things: Contribute to the Ever-Changing Definition of IoT. Available online: https:\/\/iot.ieee.org\/definition.html."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Jakobs, K. (2018). Standardizing the IoT and its Applications\u2014Learning from the Past?!. Internet of Things\u2013Concepts, Technologies, Applications, and Implementations, John Wiley & Sons.","DOI":"10.1002\/9781119456735.ch7"},{"key":"ref_5","unstructured":"(2021, March 01). Y.4000: Overview of the Internet of Things. Available online: https:\/\/www.itu.int\/rec\/T-REC-Y.4000\/en."},{"key":"ref_6","unstructured":"(2021, March 01). Y.4100: Common Requirements of the Internet of Things. Available online: https:\/\/www.itu.int\/rec\/T-REC-Y.4100\/en."},{"key":"ref_7","unstructured":"(2021, March 01). Y.4114: Specific Requirements and Capabilities of the Internet of Things for Big Data. Available online: https:\/\/www.itu.int\/rec\/T-REC-Y.4114-201707-I."},{"key":"ref_8","unstructured":"(2021, March 01). Global ICT Regulatory Outlook 2020\u2014Pointing the Way forward to Collaborative Regulation. Available online: https:\/\/www.itu.int\/pub\/D-PREF-BB.REG_OUT01."},{"key":"ref_9","unstructured":"(2021, March 01). Regulation (EU) 2016\/679 of the European Parliament and of the Council of 27 April 2016 on the Protection of Natural Persons with Regard to the Processing of Personal Data and on the Free Movement of Such Data, and Repealing Directive 95\/46\/EC (General Data Protection Regulation) (Text with EEA Relevance) OJ L 119, 4.5.2016. Available online: https:\/\/eur-lex.europa.eu\/legal-content\/EN\/TXT\/?uri=CELEX%3A02016R0679-20160504."},{"key":"ref_10","unstructured":"European Commission (2017) (2021, March 01). Proposal for a Regulation of the European Parliament and of the Council Concerning the Respect for Private Life and the Protection of Personal Data in Electronic Communications and Repealing Directive 2002\/58\/EC (Regulation on Privacy and Electronic Communications) COM\/2017\/010 Final-2017\/03 (COD). Available online: https:\/\/eur-lex.europa.eu\/legal-content\/EN\/TXT\/?uri=CELEX%3A52017PC0010."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Alshohoumi, F., Sarrab, M., Alhamadani, A., and Al-Abri, D. (2019). Systematic Review of Existing IoT Architectures Security and Privacy Issues and Concerns. Int. J. Adv. Comput. Sci. Appl., 10.","DOI":"10.14569\/IJACSA.2019.0100733"},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Lynn, T., Mooney, J., Lee, B., and Endo, P.T. (2020). The Internet of Things: Definitions, Key Concepts, and Reference Architectures. The Cloud-to-Thing Continuum, Palgrave Macmillan.","DOI":"10.1007\/978-3-030-41110-7_1"},{"key":"ref_13","unstructured":"(2021, March 01). Y.4113: Requirements of the Network for the Internet of Things. Available online: https:\/\/www.itu.int\/rec\/T-REC-Y.4113\/en."},{"key":"ref_14","unstructured":"Hanes, D., Salgueiro, G., Grossetete, P., Barton, R., and Henry, J. (2017). IoT Fundamentals: Networking Technologies, Protocols, and Use Cases for the Internet of Things, Cisco Press."},{"key":"ref_15","unstructured":"Iorgam, M.L., Feldman, R., Barton, M.J., Martin, N., and Goren, C. (2021, March 01). Mahmoudi. Fog ComputingConceptual Model\u2014 Recommendations of the National Institute of Standards and Technology, Available online: https:\/\/www.nist.gov\/publications\/fog-computing-conceptual-model."},{"key":"ref_16","unstructured":"(2021, March 01). Y.4460: Architectural Reference Models of Devices for Internet of Things Applications. Available online: https:\/\/www.itu.int\/rec\/T-REC-Y.4460\/en."},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Weber, M., and \u017darko, I.P. (2019). A Regulatory View on Smart City Services. Sensors, 19.","DOI":"10.3390\/s19020415"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"289","DOI":"10.1016\/j.sysarc.2019.02.009","article-title":"All one needs to know about fog computing and related edge computing paradigms: A complete survey","volume":"98","author":"Yousefpour","year":"2019","journal-title":"J. Syst. Arch."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"723","DOI":"10.1109\/ACCESS.2017.2775042","article-title":"An Introduction to Dew Computing: Definition, Concept and Implications","volume":"6","author":"Ray","year":"2018","journal-title":"IEEE Access"},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"\u0160ojat, Z., and Skala, K. (June, January 30). Views on the role and importance of dew computing in the service and control technology. Proceedings of the 2016 39th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO), Opatija, Croatia.","DOI":"10.1109\/MIPRO.2016.7522131"},{"key":"ref_21","unstructured":"(2021, March 01). Technical Specification D2.1\u2014Data Processing and Management Framework for IoT and Smart Cities and Communities. Available online: http:\/\/handle.itu.int\/11.1002\/pub\/813b0846-en."},{"key":"ref_22","unstructured":"(2021, March 01). European Data Protection Supervisor Guidelines on the Concepts of Controller, Processor and Joint Controllership under Regulation (EU) 2018\/1725, 7 November 2019. Available online: https:\/\/edps.europa.eu\/data-protection\/our-work\/our-work-by-type\/guidelines_en."},{"key":"ref_23","unstructured":"(2021, March 01). European Data Protection Board Guidelines 07\/2020 on the Concepts of Controller and Processor in the GDPR. Available online: https:\/\/edpb.europa.eu\/our-work-tools\/public-consultations-art-704\/2020\/guidelines-072020-concepts-controller-and-processor_en."},{"key":"ref_24","unstructured":"(2021, March 01). ETSI TR 103 591 V1.1.1 82019-10 SmartM2M; Privacy Study Report; Standards Landscape and Best Practices. Available online: https:\/\/www.etsi.org\/deliver\/etsi_tr\/103500_103599\/103591\/01.01.01_60\/tr_103591v010101p.pdf."},{"key":"ref_25","unstructured":"(2020, November 25). Information Commissioner\u2019s Office: What Needs to be Included in the Contract?. Available online: https:\/\/ico.org.uk\/for-organisations\/guide-to-data-protection\/guide-to-the-general-data-protection-regulation-gdpr\/contracts-and-liabilities-between-controllers-and-processors-multi\/what-needs-to-be-included-in-the-contract\/#11."},{"key":"ref_26","unstructured":"(2021, March 01). European Commission Communications (2020), Data Protection as a Pillar of Citizens\u2019 Empowerment and the EU\u2019s Approach to the Digital Transition\u2014Two Years of Application of the General Data Protection Regulation COM\/2020\/264 Final. Available online: https:\/\/eur-lex.europa.eu\/legal-content\/EN\/TXT\/?uri=CELEX%3A52020DC0264."},{"key":"ref_27","unstructured":"(2021, March 01). BEREC Report on the Data Economy. Available online: https:\/\/berec.europa.eu\/eng\/document_register\/subject_matter\/berec\/reports\/8599-berec-report-on-the-data-economy."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Zantalis, F., Koulouras, G., Karabetsos, S., and Kandris, D. (2019). A Review of Machine Learning and IoT in Smart Transportation. Futur. Internet, 11.","DOI":"10.3390\/fi11040094"},{"key":"ref_29","unstructured":"Mackenzie, M., and Rebbeck, T. (2021, March 01). What Is the IoT Value Chain and Why Is It Important?. Available online: https:\/\/www.analysysmason.com\/research\/content\/comments\/iot-value-chain-rdme0\/."},{"key":"ref_30","unstructured":"Synergy Consulting Group (2021, March 01). Enabling the IoT Ecosystem with Policy and Regulation How Policymakers and Regulators Can Encourage Sustainable Market Growth. Available online: https:\/\/www.synergyconsulting.ae\/insights\/enabling-iot-ecosystem-policy-regulation\/."},{"key":"ref_31","unstructured":"Paradis, I. (2021, March 01). International Carriers\u2019 Path to the IoT Gold Mine, The Mobile Century. Available online: http:\/\/themobilecentury.com\/international-carriers-path-to-the-iot-gold-mine\/."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"25","DOI":"10.1109\/MSPEC.2016.7572533","article-title":"The internet of word-things","volume":"53","author":"Cicciari","year":"2016","journal-title":"IEEE Spectr."},{"key":"ref_33","unstructured":"(2021, March 01). Y.2222: Sensor Control Networks and Related Applications in a Next Generation Network Environment. Available online: https:\/\/www.itu.int\/rec\/T-REC-Y.2222-201304-I\/en."},{"key":"ref_34","unstructured":"(2021, March 01). IoT Device Certification Landscape. Available online: https:\/\/www.gsma.com\/iot\/resources\/iot-device-certification-landscape\/."},{"key":"ref_35","unstructured":"Elizalde, D. (2021, March 01). How Does an IoT Device Work?. Available online: https:\/\/danielelizalde.com\/iot-hw-blocks\/."},{"key":"ref_36","unstructured":"(2021, March 01). Y.4101: Common Requirements and Capabilities of a Gateway for Internet of Things Applications. Available online: https:\/\/www.itu.int\/rec\/T-REC-Y.4101-201710-I\/en."},{"key":"ref_37","unstructured":"(2021, March 01). IoT 101: An Introduction to the Internet of Things, First Edition. Available online: https:\/\/www.leverege.com\/ebooks\/iot-intro-ebook."},{"key":"ref_38","unstructured":"(2021, March 01). IoT Analytics: IoT Platforms Company Landscape 2020. Available online: https:\/\/iot-analytics.com\/product\/iot-platforms-landscape-database-2020\/."},{"key":"ref_39","unstructured":"(2021, March 01). JT Solutions IoT Blog\u2014The 5 Types of IoT Platforms. Available online: https:\/\/blog.jtiot.com\/the-5-types-of-iot-platforms."},{"key":"ref_40","unstructured":"Lucero, S. (2021, March 01). IoT Platforms: Enabling the Internet of Things, White Paper, IHS Technology. Available online: https:\/\/cdn.ihs.com\/www\/pdf\/enabling-IOT.pdf."},{"key":"ref_41","unstructured":"(2021, March 01). Y.4208: Internet of Things Requirements for Support of Edge Computing. Available online: https:\/\/www.itu.int\/rec\/T-REC-Y.4208\/en."},{"key":"ref_42","unstructured":"(2021, March 01). Y.101: Global Information Infrastructure Terminology: Terms and Definitions. Available online: https:\/\/www.itu.int\/rec\/T-REC-Y.101-200003-I\/en."},{"key":"ref_43","unstructured":"(2021, March 01). BEREC Report on Enabling the Internet of Things. Available online: https:\/\/berec.europa.eu\/eng\/document_register\/subject_matter\/berec\/reports\/5755-berec-report-on-enabling-the-internet-of-things."},{"key":"ref_44","unstructured":"(2021, March 01). M.3050.1: Enhanced Telecom Operations Map (eTOM)\u2014The Business Process Framework. Available online: https:\/\/www.itu.int\/rec\/T-REC-M.3050.1\/en."},{"key":"ref_45","unstructured":"(2021, March 01). Internet of Things Security is More Challenging Than Cybersecurity, White Paper, Wind River Systems, Inc. Rev.. Available online: https:\/\/www.windriver.com\/whitepapers\/security\/iot-security-is-more-challenging-than-cybersecurity."},{"key":"ref_46","doi-asserted-by":"crossref","unstructured":"Fagan, M., Fagan, M., Megas, K.N., Scarfone, K., and Smith, M. (2021, March 01). Foundational Cybersecurity Activities for IoT Device Manufacturers\u2014The National Institute of Standards and Technology (NIST) U.S. Department of Commerce, Available online: https:\/\/csrc.nist.gov\/publications\/detail\/nistir\/8259\/final.","DOI":"10.6028\/NIST.IR.8259"},{"key":"ref_47","doi-asserted-by":"crossref","unstructured":"Fagan, M., Megas, K.N., Scarfone, K., and Smith, M. (2021, March 01). IoT Device Cybersecurity Capability Core Baseline\u2014The National Institute of Standards and Technology (NIST), Available online: https:\/\/csrc.nist.gov\/publications\/detail\/nistir\/8259a\/final.","DOI":"10.6028\/NIST.IR.8259a"},{"key":"ref_48","unstructured":"EUROSMART (2021, March 01). The Voice of The Digital Security Industry. Available online: https:\/\/www.eurosmart.com\/who-we-are\/#members."},{"key":"ref_49","unstructured":"(2021, March 01). CYBER\u2014Cyber Security for Consumer Internet of Things: Baseline Requirements. Available online: https:\/\/www.etsi.org\/deliver\/etsi_en\/303600_303699\/303645\/02.01.00_30\/en_303645v020100v.pdf."},{"key":"ref_50","unstructured":"(2021, March 01). ENISA Advisory Group\u2014Opinion Consumers and IoT Security. Available online: https:\/\/www.enisa.europa.eu\/about-enisa\/structure-organization\/advisory-group\/ag-publications\/final-opinion-enisa-ag-consumer-iot-perspective-09.2019."},{"key":"ref_51","doi-asserted-by":"crossref","unstructured":"Silva, R., Silva, J.S., and Boavida, F. (2017, January 8\u201312). Opportunistic fog computing: Feasibility assessment and architectural proposal. Proceedings of the 2017 IFIP\/IEEE Symposium on Integrated Network and Service Management (IM), Lisbon, Portugal.","DOI":"10.23919\/INM.2017.7987320"},{"key":"ref_52","first-page":"1","article-title":"A Review of Techniques and Methods for IoT Applications in Collaborative Cloud-Fog Environment","volume":"2020","author":"Jiang","year":"2020","journal-title":"Secur. Commun. Networks"},{"key":"ref_53","doi-asserted-by":"crossref","unstructured":"Li, Z., and Wang, Y. (2020). An Introduction and Comparison of the Application of Cloud and Fog in IoT. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, Springer Nature.","DOI":"10.1007\/978-3-030-48513-9_5"},{"key":"ref_54","doi-asserted-by":"crossref","unstructured":"Bonomi, F., Milito, R., Zhu, J., and Addepalli, S. (2012, January 13\u201317). Fog computing and its role in the Internet of Things. Proceedings of the first edition of the MCC workshop on Mobile cloud computing, Helsinki, Finland.","DOI":"10.1145\/2342509.2342513"},{"key":"ref_55","unstructured":"(2020, November 25). Cisco\u2014What is Edge Computing. Available online: https:\/\/www.cisco.com\/c\/en\/us\/solutions\/computing\/what-is-edge-computing.html."},{"key":"ref_56","unstructured":"Yingwei, W., Skala, K., Rindos, A., Gusev, M., Shuhui, Y., and Yi, P. (2021, March 01). Dew Computing and Transition of Internet Computing Paradigms, ZTE Communications, No.4 2017, No.59. Available online: https:\/\/www.zte.com.cn\/global\/about\/magazine\/zte-communications\/2017\/4\/en_222\/466311.html."},{"key":"ref_57","unstructured":"Naveen, J. (2021, March 01). Fog vs Edge vs Mist Computing: Which One Is the Most Suitable for Your Business?. Available online: https:\/\/www.allerin.com\/blog\/fog-vs-edge-vs-mist-computing-which-one-is-the-most-suitable-for-your-business."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"4049","DOI":"10.1109\/JIOT.2018.2876088","article-title":"Toward a Heterogeneous Mist, Fog, and Cloud-Based Framework for the Internet of Healthcare Things","volume":"6","author":"Rahman","year":"2019","journal-title":"IEEE Internet Things J."},{"key":"ref_59","doi-asserted-by":"crossref","unstructured":"Dolui, K., and Datta, S.K. (2017). Comparison of edge computing implementations: Fog computing, cloudlet and mobile edge computing. 2017 Global Internet of Things Summit (GIoTS), 1\u20136.","DOI":"10.1109\/GIOTS.2017.8016213"},{"key":"ref_60","unstructured":"Varghese, B., Wang, N., Nikolopoulos, D.S., and Buyya, R. (2021, March 01). Feasibility of Fog Computing. Available online: https:\/\/www.academia.edu\/31011430\/Feasibility_of_Fog_Computing."},{"key":"ref_61","doi-asserted-by":"crossref","unstructured":"Al-Turjman, F. (2018). Applications of the Internet of Things with the Cloud Computing Technologies: A Review. Edge Computing. EAI\/Springer Innovations in Communication and Computing, Springer Nature.","DOI":"10.1007\/978-3-319-99061-3"},{"key":"ref_62","unstructured":"Mahesa, R. (2021, March 01). How Cloud, Fog, and Mist Computing Can Work Together. Available online: https:\/\/ibmcode-staging.us-east.containers.mybluemix.net\/articles\/how-cloud-fog-and-mist-computing-can-work-together\/."},{"key":"ref_63","unstructured":"Roberts, P. (2021, March 01). IBM and Samsung Bet on Bitcoin Tech to Save the Internet of Things, The Security Ledger. Available online: https:\/\/securityledger.com\/2015\/01\/ibm-and-samsung-bet-on-bitcoin-to-save-iot\/."},{"key":"ref_64","unstructured":"Document, No. (2021, March 01). 1: A Mapping of Arcep and Its Partners\u2019 Understanding of the Issues Pertaining to the Internet of Things. Available online: https:\/\/en.arcep.fr\/news\/press-releases\/p\/n\/arcep-and-its-partners-publish-a-white-paper-to-prepare-for-the-internet-of-things-revolution-to-en.html."},{"key":"ref_65","unstructured":"Kar, A., Sinha, S., and Gupta, M. Analysis of stakeholders within IoT ecosystem. Digital India. Advances in Theory and Practice of Emerging Markets, Springer Nature."},{"key":"ref_66","unstructured":"(2021, March 01). GSMA\u2014What\u2019s Unique about the IoT?. Available online: https:\/\/www.gsma.com\/iot\/whats-unique-iot\/."},{"key":"ref_67","unstructured":"OECD\u2014IoT Measurement and Applications (2021, March 01). OECD Digital Economy Papers 2018. Available online: https:\/\/www.oecd-ilibrary.org\/science-and-technology\/iot-measurement-and-applications_35209dbf-en."},{"key":"ref_68","unstructured":"Winchcomb, T., Massey, S., and Beastall, P. (2021, March 01). Review of Latest Developments in the Internet of Things, A Report for Ofcom by Cambridge. Available online: https:\/\/www.ofcom.org.uk\/research-and-data\/telecoms-research\/general\/review-of-latest-developments-in-the-internet-of-things."},{"key":"ref_69","unstructured":"(2021, March 01). Asia-Pacific Telecommunity, SATRC Report on ICT Regulatory Framework for M2M Communications and IOT for the SATRC Countries. Available online: https:\/\/www.apt.int\/sites\/default\/files\/SATRC-SAPVI-02_M2M_Report.docx."},{"key":"ref_70","unstructured":"Moss, J., and Barnett, G. (2021, March 01). OVUM\u2014The Internet of Things: Understanding the Evolving Value Chain. Available online: https:\/\/silo.tips\/download\/the-internet-of-things-understanding-the-evolving-value-chain."},{"key":"ref_71","unstructured":"(2021, March 01). Ericsson\u2014Exploring IoT Strategies Insights on IoT Value Chain Positioning from Leading Telecom Service Providers. Available online: https:\/\/www.ericsson.com\/en\/press-releases\/2018\/4\/exploring-iot-strategies-telecom-service-providers-pursue-multiple-paths-to-iot-revenue."},{"key":"ref_72","unstructured":"(2021, March 01). Article 29 Data Protection Working Party (2014). Opinion 8\/2014 on the Recent Developments on the Internet of Things. Available online: https:\/\/www.pdpjournals.com\/docs\/88440.pdf."},{"key":"ref_73","unstructured":"(2021, March 01). Advisera, Expert Advice Community. Available online: https:\/\/community.advisera.com\/topic\/joint-controllers-share-of-responsibilities-in-iot\/#comment-15806."},{"key":"ref_74","unstructured":"(2021, March 01). GSR\u2014Global Symposium for Regulators (GSR) 2020 Best Practice Guidelines The Gold Standard for Digital Regulation. Available online: https:\/\/www.itu.int\/en\/ITU-D\/Conferences\/GSR\/2020\/Pages\/default.aspx."},{"key":"ref_75","unstructured":"(2021, March 01). IoT Analytics\u20145 Things to Know about the LPWAN Market in 2020, Internet Analytics Market Insights for the Internet of Things. Available online: https:\/\/iot-analytics.com\/5-things-to-know-about-the-lpwan-market-in-2020\/."},{"key":"ref_76","unstructured":"(2021, March 01). ITU\u2014ICT Regulatory Tracker 2019. Available online: https:\/\/www.itu.int\/net4\/itu-d\/irt\/#\/tracker-by-country\/regulatory-tracker\/2019."},{"key":"ref_77","unstructured":"(2021, March 01). IESE Cities in Motion IESE Business School, University of Navarra. Available online: https:\/\/blog.iese.edu\/cities-challenges-and-management\/2019\/05\/10\/iese-cities-in-motion-index-2019\/."},{"key":"ref_78","unstructured":"(2021, March 01). STATISTA\u2014Data Volume of Internet of Things (IoT) Connections Worldwide in 2019 and 2025. Available online: https:\/\/www.statista.com\/statistics\/1017863\/worldwide-iot-connected-devices-data-size\/."},{"key":"ref_79","unstructured":"(2021, March 01). FTC\u2014Data Brokers A Call for Transparency and Accountability, May 2014, Federal Trade Commission, Available online: https:\/\/www.ftc.gov\/system\/files\/documents\/reports\/data-brokers-call-transparency-accountability-report-federal-trade-commission-may-2014\/140527databrokerreport.pdf."},{"key":"ref_80","doi-asserted-by":"crossref","first-page":"40120","DOI":"10.1109\/ACCESS.2019.2904248","article-title":"Personal Data Trading Scheme for Data Brokers in IoT Data Marketplaces","volume":"7","author":"Oh","year":"2019","journal-title":"IEEE Access"},{"key":"ref_81","doi-asserted-by":"crossref","first-page":"3623","DOI":"10.1109\/JIOT.2020.2973662","article-title":"Competitive Data Trading Model with Privacy Valuation for Multiple Stakeholders in IoT Data Markets","volume":"7","author":"Oh","year":"2020","journal-title":"IEEE Internet Things J."},{"key":"ref_82","unstructured":"Wolfie, C. (2021, March 01). Corporate Surveillance in Everyday Life\u2014How Companies Collect, Combine, Analyze, Trade, and Use Personal Data on Billions. A Report by Cracked Labs. Available online: https:\/\/crackedlabs.org\/dl\/CrackedLabs_Christl_CorporateSurveillance.pdf."},{"key":"ref_83","unstructured":"MacMillan, D. (2021, March 01). Data Brokers Are Selling Your Secrets. How States Are Trying to Stop Them, Washington Post. Available online: https:\/\/www.washingtonpost.com\/business\/2019\/06\/24\/data-brokers-are-getting-rich-by-selling-your-secrets-how-states-are-trying-stop-them\/."},{"key":"ref_84","unstructured":"(2021, March 01). European Commission\u2014The Digital Services Act Package. Available online: https:\/\/ec.europa.eu\/digital-single-market\/en\/digital-services-act-package."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/6\/2093\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T05:36:51Z","timestamp":1760161011000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/6\/2093"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,3,17]]},"references-count":84,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2021,3]]}},"alternative-id":["s21062093"],"URL":"https:\/\/doi.org\/10.3390\/s21062093","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,3,17]]}}}