LINE system integration for merchants
Connect your LINE Official Account
to every system in your store
Seller Technology is a system integrator for merchants. We connect retail, food and beverage, and wellness businesses' LINE Official Accounts to their booking, POS and membership systems, without replacing the systems they already use.
Three problems merchants often face
Too many messages
Prices, opening hours, available slots: the same questions, answered many times a day.
Bookings and capacity don't match
A booking made on LINE still has to be copied to a notebook or spreadsheet and checked again by staff.
Member data is scattered
The POS, the booking system and LINE friends each keep their own list, and they don't match.
What we do
Sovereign AIComing soon
Your business know-how stays on a device in your store. Set it up once, with no AI monthly fee. Fluent in your industry's jargon, and no chit-chat.
LINE Official Account Onboarding and Setup
From opening the account to rich menus, auto-replies, and audience tags, we set up your Official Account as a tool you can use every day.
Messaging API and System Integration
Let LINE exchange data automatically with your booking, POS, membership, or in-house systems, with centralized management for multiple branches.
Booking, Scheduling, and Reminders
Customers check time slots and submit bookings in LINE, staff confirm and reply; class credits, waitlists, and pre-class reminders are handled together.
Membership, Points, and LIFF Pages
Let customers use LINE as their membership card: link a membership, earn points, and claim and redeem coupons.
POS, E-commerce, and CRM Integration
Order notifications, member matching, and inventory and order lookups, so LINE works together with your existing POS, e-commerce, and CRM.
Operations, Reporting, and Training
Ongoing care after go-live: monitoring and issue handling, monthly reports, tracking LINE changes, and staff training.
Industries we serve
Retail
Memberships and points, arrival notices, inventory and store-hours lookups, and segmented broadcasts.
Food and Beverage
Reservations and waitlists, takeout pre-orders, menu questions and answers, and regular-customer segments.
Wellness
Fitness, yoga, dance, massage, and recovery: class schedules and availability, class credits, pre-class reminders, and instructor selection.
How to start
- ConsultationAbout 30 minutes, free
- Needs reviewYour current account, systems and workflow
- Proposal and quoteScope, timeline and fees in writing
- Build and testTested with your staff before launch
- Launch and supportOngoing adjustments after launch
Our principles
- Your Official Account, provider and channel are all registered in your name.
- Your data can be fully exported; when we stop working together, we delete our copies as agreed.
- We follow LINE platform rules: data obtained through LINE is used only for your service.
- We do not use your customers' conversations to train AI models.
Inviting businesses of every kind to be design partners
Our current clients are in wellness, tutoring and education, and professional services. We invite businesses in every industry to become design partners. The first clients in each industry receive free usage rights, with rights and obligations as set out in the final signed agreement.
Want to know how your store could connect?
Book a free 30-minute consultation