Virtual reality (VR) is a technology which allows the user to interact with a computer simulated medium, through HMD (Head Mounted Display) or via stereoscopic projection systems such as CAVE, to experience a world which has no physical shape and is not real. Some media include additional sensory information, for instance audio, tactile-used by haptic systems in medical applications and games – known as force feedback. User interaction with the virtual medium is achieved with the help of standard devices such as the mouse, keyboard, multimodal devices (wired glove, – boom arm – omnidirectional treadmill, Leap motion or Nimble VR).

The rapid evolution of hardware technology in the last few years, especially in the field of gaming, made it possible to reproduce highly complex 3D multi-user virtual spaces. Its uses far transcend the realm of entertainment and has become a part of modern technological civilization.

Augmented reality (AR) is a real time, live, direct or indirect view of the world, whose elements are supplemented by the computer with an artificial world, through sensory input, such as sound, graphics, virtual characters or GPS data. As a result, the view of reality is modified, sometimes diminished, through overlaying of computer generated elements, which are actually information about the users environment, which have now become digital, interactive and manipulable.
Its function is to enhance the perception of the real world, to refine the senses and human competence.
Applications: advertising campaigns for various products and services, print media (various magazines, newspapers and other publications). The AR element included in these publications will lead readers towards further interactive content: online videos (advertising) or retail sites. Interactive AR content is found in some TV programs, provided we watch them on a smartphone or tablet pointing at the television set.

Augmented reality is increasingly used in social media to enhance the emotional connection, and the presence of such a content generates a conversation about the product, which thus becomes more personal. The features of social media must be ever more present on augmented reality application, in order to promote your services and products. This will certainly help the promotion and increase the size of the audience.