How to search printed texts using the camera of your Android phone
CTRL-F is a simple tool that uses your phone's camera to take pictures of printed texts. Once a picture is taken, the app then attempts to recognize in what language the text is written – it can recognize over 50 languages – and after it does, it lets you crop any unneeded blank areas from the picture. Then the document is processed and converted into searchable text. The final result can exported as a PDF file for further use.
CTRL-F is a really neat and easy to use tool that we'd recommend you tried out if you feel intimidated at the thought of manually searching through huge walls of printed text (and more likely than not, you do). The developer also promises an iOS version soon. In the mean time, you can download the Android version on Google Play.