Confidential Alarm System
IoT alert system for sensitive screen content protection
Overview
An IoT-based alert system designed to protect sensitive on-screen material in workplace environments. When triggered, the system instantly hides confidential content and alerts designated personnel — preventing shoulder-surfing and casual data exposure.
Technical Details
- ESP32 microcontroller — WiFi-connected device with physical alert mechanism
- MQTT messaging — lightweight pub/sub protocol for instant trigger propagation
- Custom desktop integration — companion software that listens for alert signals and hides active windows
- Physical alert — visual/audible indicator on the ESP32 device itself for ambient awareness
- Low-latency response — end-to-end trigger-to-hide time measured in milliseconds
Outcome
Deployed as a proof-of-concept in a security-conscious office environment. Demonstrated practical IoT security integration combining embedded hardware, network protocols, and desktop software into a cohesive privacy solution.