Thaam-Sang
AI-Powered Food Order Processing via LINE OA
A lightweight food ordering and billing assistant for small local restaurants via LINE OA, powered by Vision AI OCR to convert handwritten paper order slips into digital orders.


AI Order Scanning
Capture paper order notes and digitize line items instantly
Accurate Calculation
Automated totals, discounts, and item breakdowns
Slip Verification
Instant bank transfer slip check to prevent fraud
Built on LINE OA
Accessible on standard smartphones with no bulky POS equipment
Small street eateries struggle with messy paper orders
Rush hour brings illegible handwriting, manual arithmetic errors, and chaotic order queues. Traditional POS terminals are too costly, bulky, and complicated for small street food stall vendors.
Thaam-Sang — The Pocket Cashier and Order Assistant
Combining Vision AI with familiar LINE OA interface. Merchants simply snap a photo of paper order slips; the system reads items, tallies bills, and generates receipts within seconds.

Smart Handwriting OCR
Trained to recognize cursive Thai handwriting on rough paper
Menu & Pricing Management
Easily configure food items, variants, and pricing
Automated Slip Check
Instant QR slip decoding and bank balance verification
Bluetooth Thermal Printing
Seamless connection with portable thermal receipt printers
Daily Sales Analytics
Daily revenue summaries and best-seller reports sent via LINE
Full-stack Development, AI Prompt & OCR Pipeline
- User research with local street food vendors
- OCR pipeline engineering using Vision AI models
- LINE Bot webhook & LIFF frontend development
- Database schema and receipt calculation engine
- Real-world field testing in local restaurants
Field testing OCR accuracy on real restaurant orders and tuning prompt chains to handle varied handwriting.
Sub-second speed and rugged simplicity matter most
In a frantic kitchen environment, every extra tap is friction. Tools must work fast, tolerate messy environments, and never get in the way.
Roadmap Ahead
- Refine OCR precision on Thai cursive handwriting
- Support custom modifiers (spice levels, extra meat)
- Inventory alerts for low-stock ingredients
- Open pilot onboarding for local eateries
Great tools adapt to human habits, rather than forcing humans to adapt to software.
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