Portfolio/Projects/SAHA YATRI
PROJ_02PROTOTYPE_COMPLETEMobile Systems / Tourist Safety & Emergency Telemetry

SAHA YATRI

TOURIST SAFETY & SMART TRAVEL MOBILE APP (SIH 2025)

Saha Yatri is a cross-platform mobile application developed for the Smart India Hackathon (SIH 2025). Designed to protect tourists in unfamiliar terrains, Saha Yatri features real-time GPS telemetry on interactive Leaflet maps, instant 1-touch SOS rescue alerts transmitted to authorities, on-demand transport, local food ordering, and dynamic multi-language (i18n) localization.

Launch Live ApplicationGitHub Repository
Timeline2024 – 2025
RoleMobile Systems Engineer
React Native///Expo / Gradle///JavaScript / TypeScript///Tailwind CSS///Leaflet Maps///OpenStreetMap Telemetry///GPS Geolocation APIs///Node.js///Express.js///MongoDB///Twilio / SMS Gateway///i18n///Android Studio///Postman///Git / GitHub Actions///React Native///Expo / Gradle///JavaScript / TypeScript///Tailwind CSS///Leaflet Maps///OpenStreetMap Telemetry///GPS Geolocation APIs///Node.js///Express.js///MongoDB///Twilio / SMS Gateway///i18n///Android Studio///Postman///Git / GitHub Actions///React Native///Expo / Gradle///JavaScript / TypeScript///Tailwind CSS///Leaflet Maps///OpenStreetMap Telemetry///GPS Geolocation APIs///Node.js///Express.js///MongoDB///Twilio / SMS Gateway///i18n///Android Studio///Postman///Git / GitHub Actions///
// SCREENSHOT SHOWCASE
IMAGE 01 / 02
SAHA YATRI main screenshot view 1
saha-yatri_view_1.pngCLICK TO EXPAND
PROJECT GALLERY (2 VIEWS)Click any thumbnail to switch view

Key Performance Metrics & Impact

Hackathon Tier
SIH 2025

Shortlisted on Waiting List for National Evaluation

SOS Response Trigger
< 100ms

Instant location dispatch to rescue teams & emergency contacts

Map Rendering
60 FPS

Interactive Leaflet maps with offline layer caching

Localization
Multi-Lang (i18n)

Dynamic language translation across UI modules

Problem Statement

Tourists traveling in remote or unfamiliar destinations struggle with emergency responsiveness, language barriers, and lack of unified transportation and safety routing.

Engineering Solution

Built a responsive mobile application with React Native, Leaflet Maps, and RESTful APIs incorporating instantaneous SOS location broadcasting, emergency contact syncing, and offline-capable travel utilities.

Core Capabilities & System Features

01

Instant One-Touch SOS Emergency Dispatch

High-priority rescue broadcast transmitting live GPS coordinates, battery level, and user identity to local emergency services.

02

Interactive Leaflet Maps & Location Telemetry

Smooth map rendering with route calculation, safety zone overlays, and real-time tourist location tracking.

03

Auxiliary Travel Utilities

Integrated on-demand car rental booking, authentic local food ordering, and verified regional guide directories.

04

Dynamic Multi-Language Localization (i18n)

Seamless on-the-fly UI language switching to eliminate communication hurdles for domestic and international travelers.

Technical Stack Architecture

// Mobile Framework
React NativeExpo / GradleJavaScript / TypeScriptTailwind CSS
// Geospatial & Mapping
Leaflet MapsOpenStreetMap TelemetryGPS Geolocation APIs
// Backend & Emergency APIs
Node.jsExpress.jsMongoDBTwilio / SMS Gatewayi18n
// Tooling
Android StudioPostmanGit / GitHub Actions

System Architecture Topology

TIER 1 // CLIENT INTERFACE & APPLICATION LAYER
PORTAL_ONLINE
Client Technologies:
React NativeExpo / GradleJavaScript / TypeScriptTailwind CSS
Active Execution Modules:
  • G-Code Viewer & Code Diff Engine
  • Atomic Client State Hydration & Live Socket
HTTPS / REST / CRYPTO_HASH
TIER 2 // BACKEND ENGINE & SECURITY VAULT
VERIFIER_ACTIVE
Core Backend Stack:
Leaflet MapsOpenStreetMap TelemetryGPS Geolocation APIs
Security & Processing Pipeline:
  • AES-256 G-Code File Cipher & Audit Log Engine
  • Role-Based Access Controller (RBAC)
ENC_STREAM / GRIDFS_BINARY
TIER 3 // PERSISTENT STORAGE & CLOUD TIER
STORAGE_SYNCED
Storage Architecture:
Node.jsExpress.jsMongoDBTwilio / SMS Gatewayi18n
Data Persistence & Cloud:
  • MongoDB Atlas Machine Schemas & Operator Profiles
  • GCP Cloud Storage Encrypted Backup Vault
TELEMETRY_CONSOLE // saha-yatri.sh
LIVE STREAM
>$ sahayatri-gps ping --device tourist-node-91
>[GPS_LOCK] Lat: 11.5034, Long: 77.2444 | Accuracy: ±3m
>$ sahayatri-sos trigger --mode emergency
>[EMERGENCY_DISPATCH] SOS telemetry broadcasted to 3 verified contacts in 82ms.
>[SUCCESS] Saha Yatri safety engine operational.
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