In part 1 , I showed how this visitor management system was put together: a WPF reception app, face recognition, ID card scanning, and an ASP.NET MVC admin portal sharing one SQL Server database.

This part follows a single visitor from the moment they walk in to the moment they leave.

Then I will be honest about what the system lacked, and how I would upgrade it today as a senior engineer.

The Reception Desk Setup

The reception PC ran a simple WPF app with three screens.

A welcome screen that opened when the PC started.

A camera preview showing the live webcam feed.

One visitor form used for both new and returning visitors.

On the desk sat two devices.

A Logitech HD 720p autofocus webcam. Its base could rotate, so the receptionist simply turned it toward the visitor.

A hands-free barcode scanner on a stand, the kind you see at store checkouts. No trigger to press. You just hold the card in front of it.

The design goal was clear.…