You are not providing for the security of those that own the content, either in the case of a movie studio or in this case the taker of the photograph. If you

You are not providing for the security of those that own the content, either in the case of a movie studio or in this case the taker of the photograph. If you choose to have root, fair enough, but that decision does mean certain applications should cease to work. Simply banning all those applications from being allowed isn't really a solution at all. Personally, I prefer to carry separate devices which are rooted and not, and this strikes me as the only viable way forward. Some of your tech details are wrong btw. It is quite possible to get images on the screen which can't be accessed by the CPU, for example. Phones are not architecturally anything like as simple as desktop PCs.