Can we connect Square Reader From Square Website with our Login?

I need to pay using Square Reader. I have created a .NET WPF application where a Payment gateway applied using check out URL API.
Now I want to allow Square Reade for payment. Still I can’t found any proper way that can connect my application to Square Reader OR send payment alert to reader. I can open square site at WPF Browser and from there I want to Alert on Reader for payment…

Hi! I just replied in your previous thread: