The Digital signage system is usually composed of multiple subsystems, and there are many kinds of classification methods. The following are mainly classified according to the function, environment and information receiving mode.

Logos can be categorized by function

According to the real estate sign communication function, signs can be divided into five categories

Real estate identification signs can also be called positioning signs, is the most basic part of the identification system, such as city signs, facility signs and so on.

Directional marking is mainly used to indicate the guiding part of the environment by marking the direction

Spatial identification mainly refers to describing the composition of environmental space through maps, road maps and other tools in the visual or other senses, so that the human brain can produce corresponding images and identification.

Informational marks, most of which appear in the form of declarative text, are intended to supplement the image information as necessary, mainly in order to make it easier to accurately explain the ambiguous part.

Management signs are mainly based on laws and regulations and administrative planning as part of the purpose, the most common real estate is do not pick flowers, do not tread on the lawn and so on.

We can also classify according to the environment, and classify according to the environment where the identification system is located

According to the environment of the sign system, it is classified, including administrative traffic sign system (bus sign system, parking sign system, road sign system, pedestrian sign system), commercial sign system, tourism sign system, real estate sign system, hospital sign system, school space sign system, etc.

Classified according to the information received

1. Visual based identification

Generally refers to the use of words and pictures to express, relying on visual signs to convey information.

2. Auditory identifiers

The so-called auditory sign is a form of sign that uses sound to express and relies on hearing to convey information.

3. Tactile signage

Tactile signage is often combined with auditory signage, which is mainly a sign that provides guidance information for the visually impaired

4. Signs based on smell

Olfactory identification is a form of identification that uses representative odors to express and relies on smell to convey information.

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