Security Architecture // 02

HerShield

Critical Safety IoT Mobile Platform

FLUTTER BACKGROUND_SERVICES ENCRYPTION IOT

The Challenge

Personal safety applications often fail when they are needed most—during moments of low connectivity or stress. HerShield required an engineering approach that prioritized absolute reliability, discretion, and offline capability.

HerShield App interface

The Solution

I developed HerShield with fail-safes natively built in. The platform handles hardware-level interactions to provide discrete SOS functionality without needing to unlock the device.

Key Architecture

Features robust background services (via flutter_foreground_task) to maintain active location sharing and distress monitoring, tied directly to SMS fallbacks ensuring SOS delivery even without active internet connections. Data is locally persisted using highly encrypted vaults.

App Screens

Emergency SOS Home
Active Alert & Tracking
Safe Map & Heatmap
Resource & Empowerment Center
Safety Community Feed
Trusted Contacts & Circles
Initialize Return