Your Alps. One Tap.
JungfrauPass is a digital guest wallet built for the Jungfrau Region. It replaces fragmented paper vouchers and high-fee foreign card payments with a single mobile app — one wallet, every benefit, every partner, every activity in the region.
Built in 24 hours at START Hack Tour · Interlaken · April 24–26, 2026.
For guests
- Activate your pass by uploading your hotel invoice — the app parses it automatically and loads tokens based on your number of nights
- Pay at any partner by scanning their QR code — instant token transfer, zero card fees
- Redeem pre-loaded benefits (free railway ticket, restaurant discounts, bike rental, bus pass) with one-time cryptographic enforcement
- Browse and book activities pulled live from the official Jungfrau Region marketplace
- Explore the region through a quest system — discover landmarks, earn tokens, unlock hidden spots
- Top up your wallet with real CHF via Stripe (Apple Pay, Google Pay, and TWINT-ready)
For partners
- One screen, one QR code — fully operational in under two minutes
- Real-time payment notifications the moment a guest pays
- Zero per-transaction card processing fees — monthly flat settlement below 1%
- No terminal, no integration project, no training required
| Layer | Technology |
|---|---|
| Mobile app | React Native + Expo Router |
| Backend | Node.js / Express → deployable to Vercel |
| Database | Firebase Firestore (real-time) |
| Auth | Firebase Auth |
| Payments | Stripe Checkout (CHF, card / Apple Pay / Google Pay / TWINT) |
| Maps | react-native-maps |
| QR | expo-camera (scan) + react-native-qrcode-svg (generate) |
| Crypto | Web Crypto API — ECDSA P-256 proof-of-stay verification |
StartHack/
├── mobile/ # React Native / Expo app
│ ├── app/
│ │ ├── index.tsx # Login / sign-up
│ │ ├── activate.tsx # Invoice upload + stay activation
│ │ ├── role.tsx # Partner login
│ │ ├── (guest)/ # Guest tab navigation
│ │ │ ├── index.tsx # Map + quests + wallet sheet
│ │ │ ├── scan.tsx # QR pay / redeem / book
│ │ │ ├── benefits.tsx # Redeemable benefits catalog
│ │ │ ├── activities.tsx # Activity discovery + reviews
│ │ │ ├── competition.tsx # Photo contest
│ │ │ ├── topup.tsx # Buy tokens via Stripe
│ │ │ ├── history.tsx # Transaction history
│ │ │ └── profile.tsx # Account + settings
│ │ └── (partner)/ # Partner dashboard
│ │ ├── index.tsx # QR display + real-time payments
│ │ ├── bookings.tsx
│ │ ├── transactions.tsx
│ │ ├── confirm.tsx
│ │ └── account.tsx
│ ├── lib/
│ │ ├── firebase.ts # Firestore config
│ │ ├── voucher.ts # ECDSA proof-of-stay
│ │ └── parseInvoice.ts # Invoice parsing + stay validation
│ └── data/
│ ├── activities.ts # Activity catalogue (Jungfrau marketplace)
│ ├── benefits.ts # Guest card entitlements
│ └── landmarks.ts # Quest locations
└── backend/ # Express server
└── server.js # Stripe checkout + invoice parsing endpoints