Oh, you can even sniff between them and your router to see what their upto, by using APR you will become a middleman and see their passwords they use on websites ans such in clear text, you will even get their certificates, get their windows passwords and much more. Just read the help file on how to use the program when you get stuck, but what ever you do, do not install Abel on you computer, Abel is what you want on one of their computers so that you will have access to them whenever you want without ever using a password again.