Captchat

Abstract

Online privacy has been a big preoccupation since Internet started to be use. When smartphones and tablets arrived, our communications focused in these de- vices, replacing other communication forms. Messaging apps are now the main communication system with the emails, and both are replacing the telephone calls and SMS [26] However, we cannot be sure that these communications are not be intercepted by someone. Years ago it was di cult to tap a phone and listen talks, you needed a lot of tools and knowledge. But nowadays it is enough with a laptop and a wireless connection to start to read Facebook's chats. In our project we are going to do a research about Internet security and develop an Android keyboard that will send encrypted messages looks like CAPTCHA, a small Turing's test that allows send our messages in a way that will not be able to be automatically analyzed.