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HandScanner Backend Architecture

The following diagram shows how Data recorded on the HandScanner is processed and transmitted safely and securely 

Security & Data Transmission Protocols 

Device

  • Authentication: Uses RSA cryptographic authentication and certificates to prove identity and establish trust between the device and the cloud.

  • SSL/TLS encryption protects the data

    • All data and software updates sent through SSL/TLS-encrypted channels.

  • JSON is used as a structured format for data transmission

    • These packets are transmitted securely using SSL/TLS and are processed by AWS Lambda (see below). 

Backend 

  • Leverages AWS IoT Core (Amazon Web Services Internet of Things Core)
    • Message routing using MQTT (Message Queuing Telemetry Transport) or HTTPS (Hypertext Transfer Protocol Secure).
  • AWS Lambda processes incoming JSON data from IoT Core:
  • Amazon API Gateway

    • Accepts RESTful HTTP(S) requests from both:

      • Devices (e.g., for pushing updates).

      • Dashboards (e.g., for visualizing data).

  • All REST response endpoints are base64 zip and payload is encrypted

Frontend 

  •  React (JavaScript Framework) 

  • Uses SSL/TLS encryption via HTTPS to ensure secure content delivery.

  • Exclusively use TypeScript on the frontend 

Diagram