Project Overview
Exchange Rate Management is a specialized SaaS platform designed to modernize the Bureau de Change industry. Traditional currency exchange businesses often struggle with fragmented systems—updating a physical board in the shop and then manually updating their website.
This platform solves that synchronization problem. By providing a unified control plane, businesses can manage their buy/sell rates for over 153 currencies in one place. The system instantly propagates these changes to both their physical "Digital Rate Boards" (Smart TVs) and their customer-facing websites via a highly optimized embeddable widget.
Technical Architecture
1. The Embeddable Widget Engine
The core technical challenge was creating a lightweight, non-blocking script that could be embedded on any client website (WordPress, Wix, Custom React apps) without affecting their performance.
- Shadow DOM Isolation: Implemented to ensure the widget's styles never bleed into the host website, and the host's styles never break the widget.
- Asynchronous Loading: The script uses advanced lazy-loading techniques to ensure it has a negligible impact on the client's Core Web Vitals (LCP/CLS).
2. Real-Time Digital Signage
The "Digital Rate Board" feature turns any standard web browser into a professional display system.
- Hardware Agnostic: Unlike competitors requiring expensive proprietary hardware, this solution runs on any Smart TV or computer with a browser.
- WebSocket Synchronization: Rate updates are pushed instantly via secure WebSockets, ensuring the physical board always matches the point-of-sale system without requiring a page refresh.
3. Monetization & Infrastructure
- Stripe Integration: Fully automated subscription management (SaaS), handling recurring billing, tiered access (Free vs. Pro), and usage limits.
- Supabase Backend: Utilizes Row Level Security (RLS) to securely manage tenant data, ensuring strict isolation between different exchange businesses.
Key Features
Omnichannel Rate Management
A "Set Once, Update Everywhere" philosophy.
- Centralized Dashboard: Update a rate spread once, and it reflects on the shop floor TV and the company website simultaneously.
- 153+ Currencies: Automated fetching of mid-market rates as a baseline, allowing businesses to set custom spreads/margins.
Digital Board Capabilities
- 4K Responsive Layouts: The display automatically adjusts typography and grid layouts based on the screen size and resolution (from 1080p monitors to 4K TVs).
- Offline Resilience: The board caches the last known rates, ensuring the display remains functional even during temporary internet outages.
Use Cases
| Client Type | Pain Point | Solution |
|---|---|---|
| Local Exchange Shops | Updating manual boards is slow and prone to error. | Digital Board: Instant, typo-free updates from a phone or laptop. |
| Travel Agencies | Website rates often lag behind in-store rates. | Embed Widget: 1-line script keeps the website 100% in sync with the shop. |
| Multi-Branch Bureau | Hard to enforce consistent pricing across locations. | Central Control: HQ can push rate updates to all branch screens instantly. |
Results
The platform has successfully lowered the barrier to entry for digital signage in the fintech space, removing the need for $2,000+ specialized hardware setups in favor of a pure software solution that runs on existing equipment.