Comment by rolph

These are alllegitimate techniques,but have great potential for abuse/leakingoff the user.

from the other side of the coin, these are some of the ways it was/still is done.

example of browser element focus:

https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement...

allows you to throw the focus around,in the browser.

example of WinAPI SetFocus :

https://learn.microsoft.com/en-us/windows/win32/api/winuser/...

allows you to throw the focus around in the OS

JS example of mouse as a trigger event:

https://www.w3docs.com/learn-javascript/moving-the-mouse-mou...

JS example of manipulating the mouse:

https://shyama.com/automating-mouse-clicks-and-movements-wit...