How to prevent an application from publishing to a topic?

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I know, we can connect to an application and subscribe/publish to any topic through an API Key/Token combination. I want to prevent an application from publishing to a topic. So, how can I enable read-only-access in an application?
Jan 18 in IoT (Internet of Things) by Upasana
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Devices and applications operate in a topic space which is scoped within a single organization. To isolate topics in order to prohibit access of data from one organization by another, the IoT Foundation uses the org ID.

answered Jan 18 by Shubham
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