I want to scan a QR code and easily see my current queue number. I also want to receive live updates as the queue moves forward, so I can see when it is getting close to my turn.
Could you provide the complete working code for the entire system, with separate code for each stakeholder? For example, the cashier interface should be separate from the customer interface.
The system should include:
A QR code connected to the customer website.
A customer page where users can scan, get their queue number, and track the queue in real time.
A separate cashier/staff interface for managing the queue.
The QR code setup and an explanation of how it connects to the website and system.
The ability to replace the QR code later without affecting the rest of the system.
I want to keep the system as simple and lightweight as possible. There should be:
No account creation or login.
No user data storage.
No server cost if possible.
No complicated backend.
Minimal setup and development time.
No significant server-load issues.
The main goal is a simple, temporary queue system that customers can access quickly by scanning a QR code, while staff can manage the queue separately.