The visual identity of a brand refers to the set of signs that represent a brand and can be understood visually; name, logo, design, typography, photograph, video. The identity focuses on the study of the meaning of signs through semiotics (what we understand when we see red, or when we see a square?).
Beyond the visual identity we are interested today in other signs that can be understood by the other senses: sound, smell, touch. Signs of visual identity can be protected using a deposit, and some other olfactory or auditory signs.