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What if solution requires more than pure authentication? In that case an integrator can use AAA Reverse Proxy transaction system.
Transactions are user confirmed decisions like payments. They are secure, authenticated and validated using PersonalCode.
Tiny coding effort is required like providing confirmation text and evaluating the operation. When user confirmation is required (i.e. user clicks on “pay” button) following workflow is processed. Service provider actions are in bold.
This scenario has no limitations and can be used even for non-authenticated users (every ADUCID operation is also authentication).
User experience: