Is there a way to manually delete/block/prohibit only certain portable devices from connecting to my router? I just got internet. I made the fatal mistake of allowing my neighbor to use it. I hadn’t given a single thought to the fact that it would use up all my bandwidth, but I also had no idea that they literally put my password in every device they owned. Without telling them (it’s a real sticky situation) I would like to be able to block some of their devices, such as their Xbox or their phones (I am unsure as to why they even put it in their phones when they have fine 3g connection in our apartments) from making a connection. Fact of the matter is, I went through Xfinity and got the best/fastest internet they could provide and it’s already difficult to establish and keep a connection due to the overuse of bandwidth. Or so I am assuming. Either way I want to do this discreetly.