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Point of SaleProduction Showcase• Built 2024
RetailPro Point of Sale (POS) Engine
Fast, offline-resilient register software with barcode scanning.
The Operational Challenge
Retail outlets experienced severe disruptions when internet connectivity dropped, causing customer queues to stall and inventory numbers to desynchronize.
DTechBD Engineered Solution
Engineered an offline-first architecture with local SQLite persistence and automatic background queue reconciliation when connectivity is restored.
Key Architectural Features
Sub-Second Barcode Processing
Instant item lookup with support for weighted items and promotional bundle codes.
Multi-Payment Split Tally
Seamless handling of cash, card, and mobile banking (MFS) split transactions.
Shift Reconciliation Reports
Automated end-of-day X/Z reports and cash drawer balance verification.
Architecture Highlights
- Local-first database storage allowing uninterrupted transactions offline
- Direct ESC/POS thermal printer hardware integration
- Rapid keyboard-driven shortcuts for cashier efficiency
- Multi-branch stock transfer and reconciliation protocol
Technologies Deployed
ElectronReactNode.jsSQLite (Local) / PostgreSQL (Cloud)WebUSB API
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