Rendering something unreadable is a process that can be achieved in multiple ways. Encoding, which is the process of converting data into a format that is difficult to interpret, is one way to do this. Shredding, which is the process of cutting or tearing paper into small pieces, is another way to render something unreadable. Finally, encrypting, which is the process of encoding information using an algorithm, is yet another way to render something unreadable.