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After three years work in the Identity of Things discussion group, the analyses of various standards, projects and activities we would like to summarize our thoughts here. Find below a collections of questions that came across during our work, meetings, conferences and discussions.
Question & Answer
What are the challenges of Identiy in the Internet of Things?
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Does the lack of an IoT identitfier make IoT architectures more complicate?
What is special about privacy in the IoT?
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Due to diffferent identifier, protocols and domains mapping and discovery become important services in large IoT deployments with differnt systems, standards and domains. Let's give an example: A street lamp might have a field bus address consisting of 2 bytes. It is connected with a gateway. Within the gateway the lamp is mapped to "lamp 123". A lamp management system can switch on and off "lamp123" intertnally. Via a REST interface the lamp management system exposes the lamp for example as oneM2M "application entity". So other management systems can switch the lamp by sending messages to a specific oneM2M URL. In this example a thing (lamp) is identified with different identifiers that are mapped to each other (field bus address, internal ID, oneM2M-URL).
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Does the lack of an IoT identitfier
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make IoT architectures more complicate?
It takes more effort to find and map various identifier but the mapping process gives also the possibility to implement access control mechanisms. Only entitled service or user are able to rersolve or discover the identifier of a thing.This way its possible to control whether an identifier is visible or not or who can "see" a certain thing or not. In our example the policy check could be implemented in the lamp management system or with the REST API.
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