This simply wouldn’t be possible because the program wouldn’t be able to identify that you’ve copied username and password. Every username and password is just text and numbers just like everything else you copy, so it would make it next to impossible for the program to identify that you have actually copied our username and password.

The only way to do this is just to ensure that after you have copied and pasted the username and password, just press WIN + V to open up your pop-up clipboard – and then simply delete that username and passed by using the delete key.