A second screen at the till | HelloBooks POS Mirror the cart on a customer-facing display, show the running total, render the UPI / payment QR, and finish with a thank-you screen. Works with any HDMI / DisplayPort / USB-C secondary monitor — no proprietary CFD hardware.
A second screen at the till
Mirror the cart on a customer-facing display, show the running total, render the UPI / payment QR, and finish with a thank-you screen. Works with any HDMI / DisplayPort / USB-C secondary monitor — no proprietary CFD hardware.
Part of HelloBooks POS · Hardware integrations
A customer-facing display turns the cash counter from a black box into a glass surface. The customer sees every line as it goes in, catches mispriced items before settle, and trusts the receipt because they watched it form.
Every detail, dialled in
Built for the till, validated against the canonical accounting engine — so every POS sale closes the books cleanly.
Live cart mirroring
Every line the cashier adds appears on the second screen with item name, quantity, MRP, and discount. The running total updates in real time, GST is shown line-by-line, and the customer can flag a mistake before settle.
- Line-level mirror with MRP and discount
- Running total + GST visible
- Brand-customisable theme per outlet
- Idle screen with promo content
Payment QR rendered automatically
On settle, the screen flips to a UPI dynamic QR with the exact amount. The customer pays from any UPI app — Paytm, GPay, PhonePe, BHIM — and the till listens for the webhook and confirms.
- UPI dynamic QR with amount
- No manual QR app on the till
- Auto-cancellation if the cart changes
- Falls back to printed QR if the screen is offline
Thank-you and loyalty prompts
After settle, the screen shows a thank-you message, the loyalty points earned, and a prompt to opt in to receipts via WhatsApp. A small interaction window that the cashier could not deliver verbally without slowing the queue.
- Thank-you message with the customer’s name
- Loyalty points earned this visit
- WhatsApp opt-in prompt
- Idle promo for the next customer
Why teams move off legacy tills
- Customer cannot see what is being scanned
- UPI QR generated on a separate phone
- No moment to capture loyalty opt-in
- Idle screen is just a desktop background
- Live cart mirror with running total
- UPI QR rendered on settle
- Thank-you + loyalty prompt at the right moment
- Idle screen drives next-visit promo
Questions, answered
Do I need a special CFD device?
No — any second monitor works. Plug in via HDMI, DisplayPort, or USB-C and the till treats it as the customer-facing display.
Can it show ads when nobody is at the counter?
Yes. The idle screen plays an outlet-configured promo loop. Refreshes content from the back office without a redeploy.
Will the UPI QR auto-cancel if the cart changes?
Yes. If the cashier adds, removes or modifies a line after the QR is up, the QR is invalidated and re-rendered with the new amount.
Can I show GST line-by-line for B2B walk-ins?
Yes. CGST / SGST / IGST per line is visible to the customer when the bill is GST-eligible, helping them verify before settle.
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