Shuffle Lock is a content lock application for Android . With it installed on the smartphone, the user can put password protection on the entire device or in applications (individually) where they have information that they do not want to share with anyone. It is very useful, easy to use and free.
Operation is quite simple. The first step is to tap the balls that appear on the screen to form an unlock pattern. It is similar to devices like the S3, in which you need to draw your finger over the screen to create a pattern. However, the user does not touch and drag, but goes on touching one by one.

When forming the “drawing”, go ahead. Next is the cat jump. In fact, the user will not draw that pattern when he wants to unlock something, he will have to insert a numerical combination (from 0 and 1) according to the numbering of the circles that are in the marked positions.

For example: let's say you have drawn an "L". So there will probably be four circles on the left, vertical, and four on the bottom, in the horizontal position. Therefore, you need to identify the numbers 1 and 0 of each ball, in the order in which you drew your unlock pattern, and type them in order to unlock the gadget.

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