The safest way to talk is in person. There are tech savvy people who can get into these communicator conversations, even private ones. I've a friend who can encrypt what is spoken to give it a larger degree of protection, but even still, there are some who can bypass that. It should, however, be safe enough. If you want a safer means of conversing, I can get you what they call a burner phone. From that, no one will be able to trace our conversations.