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Gated Meeting Intelligence: Fail-Closed Privacy Architecture for AI-Powered Meeting Transcription

Designing consent, scope, and export gates that enforce data sovereignty before a single word is stored

When an AI bot joins a meeting, the first question is not 'what was said?' but 'who consented to recording?' This paper formalizes the gate architecture behind MARIA Meeting AI — a system where Consent, Scope, Export, and Speak gates form a fail-closed barrier between raw audio and persistent storage. We derive the gate evaluation algebra, prove that the composition of fail-closed gates preserves the fail-closed property, and show how the Scope gate implements information-theoretic privacy bounds by restricting full transcript access to internal-only meetings. In production deployments, the architecture achieves zero unauthorized data retention while adding less than 3ms latency per gate evaluation.