Hi John, I agree with Jean in that I think the first concept is the strongest and easiest to build on. (however, i 100% enjoyed the story of your trek in Africa) I like the idea of dispelling the idea that just covering up your keyboard as you type in your info is enough to protect yourself too. From experience, though, encryption can definitely be difficult to communicate visually. I think it would be interesting to think of the monitor in your sketch as a decoy screen or something in that same vein? Just something that communicates the misdirection and protection that encryption offers?