Think that you ideally need to markup or censor a list of keywords in a visual release across the country, but not necessarily for root devices.
It still works on sites through browser plugins.
But is it possible to think of how using popular applications, such as whatsapp, facebook, (one at a time)?
Reading: I know that it is possible to read / change some text inputs not yet as a whole / everything? http://developer.android.com/training/accessibility/service.html
A universal way of marking can determine the coordinates of the image using OCR and set transparent overlays on the fly + smoothed with scrolling, just not convinced how well it can work and be effective with batteries (we could deal with low accuracy of text recognition)
I add my whole reputation for generosity. Highlighting a good way for any popular application (the top 20 social applications) qualifies as an accepted answer!
Alignment Solution for "1." only two or more applications are also qualified.
Showing why / where it will work with one application, but not with another, it also qualifies as an accepted answer.
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