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Identity protocols support indoor playground access by issuing dynamic verifiable credentials (VCs) linked to decentralized identifiers (DIDs). These VCs encode eligibility (e.g., age, waiver status, session bookings) and are scanned via NFC wristbands or QR codes at entry points. Zero-knowledge proofs validate credentials without exposing personal data, while smart contracts track capacity limits and session durations. Parents/guardians can update VCs in real-time (e.g., adding emergency contacts), enhancing safety and streamlining check-ins.

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