Recientemente, se han propuesto varios modelos para cambiar los esquemas de contraseñas actuales, entre ellos los esquemas de contraseñas visuales son una alternativa en los sistemas de autenticación. En este trabajo, describimos algunos de estos esquemas y desarrollamos un programa basado en mosaicos. Abstract Recently, several models to change the current password schemes have been proposed, among them the visual password schemes are an alternative in the authentication systems. In this work, we describe some of these schemes and developed a program based on mosaics.Abstract: Recently, several models to change the current password schemes have been proposed, among them the visual password schemes are an alternative in the authentication systems. In this work, we describe some of these schemes and developed a program based on mosaics.