Hi, I was wondering if it would be possible to design a plugin that made it when certain users log in, it would not register on the server. So that no one else could tell they are online. Is this possible?
In the future please read the forum rules before posting; By not searching for the many threads that make this same exact request - and have the answer in them - you broke the rules. To answer your question, no this is not possible without a client mod and thus it would be useless.