Steno.io brings encryption to a next level: on a piece of paper. It uses the Puzzle algorithm to generate a secure relation between two sets of words based on a password. The words in the message are then replaced by their corresponding ones in the other set (a dictionary). By having a ciphertext composed of words, Steno.io is able to hide the message in the massive amount of information that is internet. But its best advantage is when wrote down on a paper, it can evade any electronic surveillance.