A mobile phone widely used nowadays and becomes more powerful than a computer for a few years. It can do the same function that a computer can do. Day after day the mobile phone has developed and become more important, but the confidential information remains to keep the challenge of security. This paper proposes a method for keeping the information by hiding text in an image. The proposed method increases randomization depending on the random key. It enhances security via encrypting the covered image with the key. The proposed method implemented by Java Platform Micro Edition (J2ME), since it supports a lot of APIs and features to mobile applications.

Today, Unmanned Aerial Vehicles (UAVs), commonly known as Drones, are used to take pictures of places where it is difficult for humans to access, which represents a great advantage, but videos or photographs can likely be subsequently used by users who do not have the authorization of the owners; this represents a great vulnerability. For this reason, in this research, a technique that applies steganography to videos is proposed, implementing chaotic mathematical models to increase security, which will help to identify the devices from where the captures were made. In addition, correlation diagrams were elaborated with which it was possible to observe that the system guarantees integrity since when recovering the message, there were no losses.