Model 4 seeks to give the person, about whom the data is, access to their data by creating digital wallets into which information can be stored and shared.
Deduplication Model 4
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From the Blog on deduplication
Deduplication Model 3
Model 3 uses a zero knowledge proof. If deduplication is the purpose, I don’t need to know any details about you, I just need to know if you are unique.
Deduplication Model 2
Model 1 had a central data layer ‘owned’ by a single agency. Model 2 is still has a central data layer, but this time the data layer is held in ‘common’.
Deduplication Model 1
Centralising the data is the most common approach to deduplication. Model 1 involves a central data layer owned by one agency.
Deduplication: The Unique Human Problem
The unique human problem (or deduplication) across a group of humanitarian actors might be resolved by using a secret code derived from a set of attributes.
Uniqueness in a decentralised eco-system
We don’t appear to have solved the multiple wallet challenge. I can have multiple digital wallets; how can we prove there is only one ‘me’ in the ecosystem?