In some situations, there may be a need for multiple mice on a system. For example, at a conference when using a system to discuss details relating to the company. The speaker may need a mouse to point things out, while others can use another mouse to point out other things. There is also a way to include the keyboard as well, but this is not part of the BASH script I wrote. You can always add in a keyboard if needed. And yes, if you have open two word processor apps, one keyboard can type... https://www.linux.org/threads/using-multiple-mice-simultaneously-on-linux-with-xinput.58544/