Payments & POS
A Guide to Modern Point of Sale: QR Payments, OneLink, and Flexible Booking Workflows
Published September 2026 · 7 min read
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Managing payments for a service-based business used to require a trade-off: either rely entirely on online advance bookings, or invest in physical card terminals to handle walk-ins and in-person appointments.
Modern scheduling platforms have rendered dedicated card hardware unnecessary. By combining flexible booking rules with software-driven Point of Sale (POS) capabilities, business owners can handle advance bookings, walk-ins, and manual payment methods under a single system.
Online Advance Bookings vs. In-Person Manual Payments
Every service business operates differently. Some require strict upfront payment to reduce no-shows, while others prefer collecting fees after delivering a service. A flexible booking workflow supports both models:
- Automated Upfront Payments: Customers select a service on your website, choose an available time slot, and pay instantly at checkout. The appointment is logged and confirmed automatically.
- Manual / Pay-Later Settings: Disable mandatory upfront payment online, or create custom bookings manually for walk-in clients. The booking is added to your schedule immediately, leaving the payment status open until you process it in person.
Software POS: Handling Walk-Ins Without Card Hardware
When a walk-in client arrives or an existing customer reaches the end of their appointment, you can process the transaction through your admin dashboard using software-only POS functionality. Rather than handing the customer a physical card reader, you open the booking from your received bookings list and select an on-the-spot checkout method.
1. Scan to Pay via QR Codes
Scan-to-Pay leverages the native camera and digital wallet features built into modern smartphones. When you select the QR payment option on your screen, the system generates a dynamic, transaction-specific QR code.
- How it works: The customer points their smartphone camera at your screen to scan the code, opening a secure, web-based payment page with your branding and the exact charge amount.
- Native mobile checkout: Because the page opens on the customer's own device, it connects to their digital wallet. Instead of typing 16-digit card numbers, they authenticate with Apple Pay, Google Pay or saved credentials in a single tap (Face ID or fingerprint).
2. Accelerated Checkout with Stripe OneLink (Link by Stripe)
For integrated digital payments, platforms use Stripe's accelerated checkout ecosystem — often referred to as OneLink or Link by Stripe. Link is a secure, cross-merchant payment tool that saves a customer's card details, billing address and phone number.
When a returning customer who has used Stripe Link before scans your QR code or opens your booking link, the system recognises their email or phone, sends a one-time SMS code, and instantly auto-fills their saved card. This eliminates friction, making checkout as fast as a card tap.
3. Remote Email Tickets
If a customer needs to pay remotely — or you prefer not to display a screen — choose the Email Ticket option. This dispatches a secure payment link to the client's inbox, letting them complete the transaction on their own device at their convenience.
Completely Manual Payments: Operating Without Payment Gateways
Integrated card processing is entirely optional. If you prefer not to use Stripe or online gateways, GetaBooking lets you run a fully manual payment workflow at zero added transaction cost.
- Cash Payments: Take physical cash from walk-in or returning clients at the point of service.
- Direct Bank Transfers (BACS): Provide clients with your business account details to pay via online or mobile banking.
- Manual Reconciliations: You keep full control. When cash or a transfer arrives, open the customer's booking and update the status from Unpaid to Paid.
Summary of Payment Workflow Options
Whether you want a fully automated online booking engine, a hardware-free POS for walk-ins, or a simple manual ledger for cash, modern scheduling software adapts to your operational style.
| Payment Workflow | Hardware Required | Processing Method | Ideal Use Case |
|---|---|---|---|
| Online Upfront | None | Stripe / Apple Pay / Google Pay | Standard website bookings and automated scheduling. |
| Scan to Pay (QR) | Smartphone or tablet screen | On-screen QR scanned by the customer's phone | In-person walk-ins; fast checkout without card machines. |
| Stripe OneLink | Smartphone or tablet screen | One-click auto-fill via SMS verification | Returning customers wanting instant mobile checkout. |
| Manual Cash / BACS | None | Physical cash or direct bank transfer | Businesses avoiding card fees or managing offline accounting. |
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