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Development of a SaaS platform and software for self-service kiosks.
1. General project description
Development of a B2B SaaS platform based on the HaaS/RaaS model (Hardware/Retail as a Service) for automating sales in barbershops and beauty salons.
The product consists of a cloud management panel (Web Admin Panel) and a client web application (Kiosk Frontend) operating on 24-inch vertical touch screens in a secure mode.
2. System architecture
Backend (Cloud server):
Data storage (PostgreSQL/Supabase), subscription management for owners, processing API requests.
Web Admin Panel:
Owner's personal account.
Kiosk Application:
Terminal interface.
Hardware Bridge:
Local wrapper program (Electron.js or Python) for connecting the web tab of the browser with the physical ports (USB/COM) of the payment terminal and receipt printer.
3. Owner's personal account (Web Admin Panel)
Access is provided by subscription. The panel should be as intuitive as possible, without complex drag-and-drop mechanics.
Module "Constructor" (CMS)
• Uploading the salon logo.
• Choosing a visual theme from 3 presets (Light Minimalistic, Dark, Branded).
• Tabular input: adding masters (photo + name), service categories, and price list.
• "Publish / Launch" button: saves settings and generates a unique secure link. When this link is opened on the kiosk, a ready-to-use interface is launched.
Module "Marketing and Upsell"
• Adding complementary products (cosmetics) for additional sales.
• Setting up automatic discounts ("Happy Hours").
Module "Analytics and AI"
• Dashboard: revenue, number of transactions, statistics for each master (including collected tips).
• AI Assistant (based on LLM), which summarizes the week's results in text and gives sales advice.
4. Kiosk application (Kiosk Frontend)
Vertical interface (aspect ratio 9:16), operating in full-screen Kiosk Mode (strict lockout of access to the operating system).
Main navigation and multilingual support
• A language selector is located in the corner of the screen.
• Localization (i18n): English and Polish languages are hardcoded in the code for instant loading. Other languages (Spanish, French) are translated dynamically via API (DeepL/Google) with mandatory caching of translations in the salon's database to save requests.
• Three main buttons on the start screen: "New Visit," "Repeat Visit," "Purchase Products."
Scenario "Repeat Visit" and loyalty program
• The client enters their phone number for identification.
• Hidden loyalty: the system checks the visit counter in the database. If the condition set by the owner is met (for example, "6th haircut"), an animation of a gift is displayed, and a 100% discount is automatically applied.
• An offer to repeat the last service with the same master in one click.
Scenario "New Visit" and payment
• Choosing a master.
• Choosing a service.
• Upsell screen (offering to add shampoo, paste, or an additional service).
• "Smart Tips" screen: a pop-up before the final amount — "Will you leave a tip for the barber [Name]?" Action buttons: "No, thank you," quick denominations (e.g., 5 zł, 10 zł, 20 zł), and "Other Amount" button (calls the numeric keypad).
• Payment: transferring the final amount (service + tips + products) through the Hardware Bridge to the bank terminal. Payment waiting animation.
Transaction completion and marketing
• SMS receipts and Google Maps: an offer to send the receipt via SMS. The SMS integrates a link to the electronic receipt and a request to leave a review on Google Maps (the link to the maps is set in the admin panel).
• Quality assessment: the last screen with a photo of the master and 5 stars — "Rate the work." One touch sends the rating to the owner's admin panel and returns the kiosk to the main screen.
5. Hardware and stability requirements
Integration with acquiring
• Direct API integration with Polish terminals (Polcard, eService).
• The system must correctly handle errors: insufficient funds, cancellation by the client, timeout.
Integration with printer
• Automatic printing of fiscal receipts.
Offline resilience
• In the event of a short-term Wi-Fi network drop, the kiosk saves visit data locally and synchronizes it with the server when the connection is restored.
6. Recommended technology stack
Frontend (Admin Panel + Kiosk)
• React
• Next.js
• TailwindCSS
Backend & Database
• Supabase (PostgreSQL)
• Node.js
Hardware Bridge
• Electron.js (for packaging the web version into a desktop application with access to USB/COM ports of the hardware)
AI & External API
• OpenAI API (AI analytics)
• Twilio or SMSAPI (sending SMS receipts)
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