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Federated IDs

I was talking this morning with Mark Hallas, policy advisor to the government of Ontario, and he helped me understand why “federated” ID systems are an important topic here. I had thought that the draw of federation is that it enables identities spread across multiple applications and domains to be unified. But Mark explained that federation is important to him also because of the looseness of its binding of IDs. For example, one government system may need to check an ID in another system, perhaps in another province, to verify someone’s age but should not have access to the rest of the information being stored. Federated systems can allow this type of filtered access.

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