Face the Customer, Keep the Receipt: Displays and Digital Receipts

The customer-facing display is the one screen your staff never looks at and your customer never stops looking at. NoPOS mirrors the cart there in real time, captures tips and signatures on it, and finishes with a digital receipt the customer actually keeps.

Turn the display into a trust screen

• Mirror every scan, discount, and tax line the moment it lands so the customer watches the total build — no surprises at payment.
• Show the running total large and the item list small: one glance answers "what am I paying" without reading a receipt tape.
• Keep the display on brand and calm — no staff controls, no backend noise, just the sale as the customer understands it.

Capture tips and signatures where the eyes already are

• Prompt for tip percentages on the customer display right after the total settles, with custom amounts one tap away.
• Collect signatures and feedback on the same screen so the card reader, the display, and the receipt agree on one total.
• Log every tip and signature against the order and the cashier so the end-of-day tip report writes itself.

Send receipts customers actually keep

1. Offer SMS and email receipts at payment time, prefilled from the loyalty profile when one exists.
2. Include the itemized breakdown, payment method, and a feedback link — the receipt becomes the review funnel.
3. Archive every receipt with the order record so reprints, returns, and chargeback evidence take seconds, not searches.

Use Swagger UI or OpenAPI for the current display-session, tip-prompt, and receipt-delivery request shapes.