NodePass

A blockchain-based anonymous ticketing system for public transport. NFC-based verification using Host Card Emulation, contactless validation with full passenger privacy.

React Vite Capacitor Android NFC Host Card Emulation Blockchain Express.js Tailwind CSS

Built at LauzHack 2025 (Lausanne Hackathon). NodePass uses Host Card Emulation on Android to act as a virtual NFC ticket, validated against an on-chain registry without ever exposing the holder's identity. The validators only learn whether a ticket is valid — not who is travelling.

Stack

Mobile: React + Vite + Capacitor (Android), with Host Card Emulation
Backend: Express.js gateway
On-chain: anonymous credential registry

Award

1st Place · SBB Prize · LauzHack 2025 — selected by Swiss Federal Railways for the cleanest privacy story of the hackathon.