Sell at the counter. The books are already done.

The counter screen is a full point of sale — scan gun, cash drawer, receipt printer, split payments — that happens to post double-entry journals. Every charge writes revenue, tax, stock and payment to the same ledger your accountant closes. There is no 'POS export' because there is nothing to export: the sale was born in the books.

This is the wall between SeroBooks and the QuickBooks-plus-a-POS stack: no connector, no nightly sync to babysit, no third subscription, and no Tuesday where the two systems disagree about what Monday took.

After every action, focus returns to the scan box — the design rule that makes the screen queue-proof. Scan, scan, scan, F9, done. Typing searches name, code and SKU; arrows pick; Enter adds. Quantity for the wholesale case, grid entry for the clothing size run, price and discount inline where permissions allow.

The keyboard map is printed on the screen itself — every till doubles as its own training poster, and a new hire is productive by lunch.

Cash, debit, credit, e-transfer, cheque, on account — one method or a split across several, because 'forty cash and the rest on card' is a normal sentence at a real counter. Card surcharges apply automatically where configured. Account sales check the credit limit before charging, not after.

Then the sale leaves the building however the customer wants it: thermal receipt, A4 invoice, email, WhatsApp — one tap each, from the same panel.

A customer runs for their card; the counter must not stall. Hold parks the whole basket and frees the screen — and critically, held stock stays reserved, so the next transaction cannot sell the goods out from under a waiting customer. Resume loads it back exactly as parked, on any till.

Serial numbers, batches and warranties are captured during the sale, not in an afterwork step — scan the exact unit leaving the building and the warranty claim two years later is a ten-second lookup.

The catalogue and customer book live on the machine. When the internet drops, the counter keeps ringing sales at full speed, and everything syncs when the line returns. Payment terminals, printers and drawers keep their local connections too.

For the owner, the guarantee is simple: the queue never waits for the cloud.