"Replacing paper loyalty cards, generating secure retail QR codes, and detailing real-time store analytics logs. We designed an interactive, multi-tenant digital ledger portal for active retail brands."
Project Challenges & Objectives
Retail stores struggle to calculate point metrics without expensive hardware. Paper stamps get lost or faked. Our structural targets included:
Loyalty Ledger
Centralized ledger keeping secure real-time counts of customer reward balances across merchant branch locations.
Secure QR Scans
Fast customer check-in and point logs using PWA camera scanners, eliminating hardware dependance.
Merchant Analytics
Custom control boards displaying customer return rates, active store footfall, and high-redeem logs.
Point Security
Prevent check-out manipulation using transactional database overrides, double entry logs, and hash signatures.
How We Built It: Merchant SaaS Architecture
We engineered a secure multi-tenant rewards architecture using PHP 8, Laravel database constraints, and QR scanner browser scripts.
Multi-Tenant Separation
Securing store transaction databases individually, separating merchant logs so store configurations never cross lines.
Browser QR Scanner
Embedding vanilla HTML5 camera scanner scripts inside the PWA view, enabling checkout clerks to scan codes in 200ms.
Database Ledger Rules
Executing points addition and redemptions within ACID database transactions, preventing double-redeem fraud hacks.
API Key Authentication
Securing merchant POS terminal devices with unique token strings, restricting logs access strictly to verified registers.
Customer Wallet Views
Building interactive client account portals showing historical reward logs, points milestones, and gift listings.
Interactive Campaigns
Enabling merchants to schedule temporary point multiplier events, automatically handled by backend chron schedulers.
Frequently Asked Questions
Q. Do merchants need special hardware to scan customer cards?
No. The merchant application runs inside any standard browser (Chrome, Safari) on smartphones, tablets, or laptops, using the native camera feed to read customer QR codes instantly.
Q. How are concurrent point redemptions secured?
Every points transaction is processed inside a database transaction lock. This ensures point values cannot be double-redeemed if scanned on two different registers at the same time.
Q. Can merchants set their own reward rates and points formulas?
Yes. Each tenant merchant dashboard allows owners to configure custom point conversion values (e.g. 1 point per $10 spent) and customize reward tier definitions.
Q. Can customer profiles be searched manually if they forget their card?
Yes. If a customer doesn't have their digital QR card available, store clerks can lookup their profile using their registered phone number on the POS dashboard.
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