Rizzler

Problem Statement

How It WorksUser AuthenticationNFC Wristband Integration: Users authenticate using their ETHGlobal NFC wristbandsProfile Fetching: User data is reverse engineered and fetched from the ETHGlobal websiteInstant Onboarding: Tap your wristband to join the gameGame MechanicsTarget Update : Every 5min, the backend randomly selects one male and one female participantArrow Navigation: All other users see directional arrows on their phones pointing toward the selected usersRace to Connect: First person to physically find and scan the selected user's NFC wristband wins a pointReal-time Tracking: GPS location enables accurate directional guidance

Solution

Tech Stack Frontend: Next.js with React hooks for real-time UI updates NFC Integration: Web NFC API for wristband scanning Location Services: GPS tracking with WebSocket communication Privacy: Zero-knowledge proofs for user data via Mopro WASM Backend: Real-time user selection and location broadcasting World Mini App: The app exists as a mini app on World using the minikit