mPOS software for book-fair and book-stall sellers in Kolkata
A book-fair mPOS runs on a phone or tablet, bills and takes UPI without a reliable network, and reconciles sales and stock back to your main system when the fair ends.
By webapps Software Solutions, Kolkata
The problem with a normal POS at a fair
At the Kolkata Book Fair or any pop-up stall, you have a folding table, a crowd, and patchy mobile data. A desktop POS is impractical and a cloud-only app stalls every time the network drops.
An mPOS app designed for events keeps a local copy of your price list and stall stock on the device, bills entirely offline, queues UPI and card confirmations, and syncs the moment it gets signal.
What to build
Catalogue and pricing pushed to the device before the fair, with a stall-specific stock allocation.
Fast billing: search by title or scan ISBN, quantity, discount, and a running total large enough to read across a table.
Payments: UPI intent/QR, card via a linked reader if you use one, and cash — all recorded even when offline.
Receipts: thermal Bluetooth printer optional; SMS/WhatsApp receipt as the default.
Sync: end-of-day upload of every sale and a stock reconciliation against what you sent to the stall.
Frequently asked questions
- Will the mPOS work with no internet at the fair ground?
- Yes. It bills, applies discounts and records payments fully offline, then syncs sales and stock when a connection is available.
- Can multiple stall staff bill at the same time?
- Yes. Each device holds its own allocation of stall stock and its own sales queue; the back office sees a combined view after sync.
- Does it reconcile with my main shop inventory?
- It should. You allocate stock to the stall before the event and the app reports what sold and what returns to the shop afterward.
Mobile POS (mPOS) development · Kolkata
WASS builds this from our Kolkata studio, with offices in Mumbai, Bengaluru and Pune. Book a free 30-minute scoping call and we will give you an honest estimate.
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