Displaying the blinking caret in a WPF textbox without focus

Question

I'm trying to make the blinking caret visible when the textbox does not have focus. My textbox cannot have focus at anytime because it is in a multiuser application with lots of textboxes simultaneously getting input from users and the main application window is set to have focus all the time. I have looked up quite a few similar discussions, but none seems to satisfy my query.

Any solutions?