Android: Do you ever feel like the person next to you on the train is staring at your phone and reading your texts? Of course you do, because we all glance at other people's phones and tablets during our boring commutes. I do, anyway. BlackBerry has a solution.
BlackBerry has a new app called Privacy Shade that covers your screen in darkness, except for the little part you actually want to see. There's only one line of text or even just a few words visible on your phone at a time. That way you can read your secret documents while stopping nosey people from seeing exactly what you're doing. It is, of course, a bit paranoid and silly to look at your phone through an imaginary periscope; as the app comes from BlackBerry, they're probably aiming for high-status professionals who carry briefcases and deal with sensitive information. Which is not me, who deals with tweets.
You could also consider it a way to help you focus, since you can only read a couple of lines of text at at time. Like in primary school when you'd put a piece of paper on a page to keep your place. Or for reading at night when you want a mostly-dark screen.
BlackBerry Privacy Shade [Google Play Store]