HemaSync: Centralized Blood Donation & Real-Time Bank Inventory Management Network

In acute medical emergencies and trauma care, finding compatible, verified blood donors often suffers from severe communication latency and fragmented records. Regional blood banks traditionally operate in disconnected silos with un-synchronized unit counts, while voluntary donor directories either leak donor personal phone numbers to public scrapers or rely on stale, unverified contact lists. This friction results in life-threatening delays during critical transfusion windows. Furthermore, prospective donors are reluctant to register on public registries due to privacy infringement concerns and spam calls. Healthcare coordinators and donation camp organizers also lack a unified, role-governed management system to orchestrate blood drives, publish urgent hospital requisitions, and monitor real-time stock levels across all eight primary blood groups (A±, B±, AB±, O±) with strict data integrity.

ARdevlopers engineered an enterprise-grade, privacy-centric blood donation and inventory platform utilizing Node.js, Express.js, MongoDB, and Handlebars server-rendered views. To protect donor privacy while facilitating rapid emergency response, the platform features a two-way contact permission handshake: donor phone numbers remain strictly masked during search queries until a requester initiates an authorized contact request that the donor explicitly reviews and approves from their profile console. The system incorporates granular Role-Based Access Control (RBAC) separating Donors, Blood Bank Inventory Managers, Admins, and Super-Admins. It integrates the Twilio Programmable Messaging API for time-expiring One-Time Password (OTP) verification, distributed session persistence via connect-mongo, and Server-Sent Events (SSE) connections to push real-time browser alerts when contact requests are approved or urgent patient requisitions are published.