Rizzler

How It Works

User Authentication

• NFC Wristband Integration: Users authenticate using their ETHGlobal NFC wristbands
• Profile Fetching: User data is reverse engineered and fetched from the ETHGlobal website
• Instant Onboarding: Tap your wristband to join the game

Game Mechanics

• Target Update : Every 5min, the backend randomly selects one male and one female participant
• Arrow Navigation: All other users see directional arrows on their phones pointing toward the selected users
• Race to Connect: First person to physically find and scan the selected user's NFC wristband wins a point
• Real-time Tracking: GPS location enables accurate directional guidance

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