I guess by privacy you mean SSL, right? What about this... a network where the default mode is no privacy, but it will allow some apps to have that for things

I guess by privacy you mean SSL, right? What about this... a network where the default mode is no privacy, but it will allow some apps to have that for things like person-to-person communication, say WhatsApp for example. And it allows the use of images and videos for some websites like companies and government websites, etc. Would that work?... Also, I don't have much understanding of the topic, if you can, please recommened a book.