body language

Before the birth of language, humans primarily communicated through body language in hunting or daily life, with gestures becoming the most important form of communication used for emotional expression, directional guidance, warning of danger, and more.

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.

In early human communication, gestures played an important role. Research has shown that early humans may have communicated through gestures, which gradually evolved into syllables and symbols with specific meanings, forming the primitive writing system. For example, early humans needed to develop forms of communication in hunting and cooperative living, and gestures became an important communication tool. This gesture language is not only used for emotional expression, but also for practical purposes such as indicating direction and warning of danger.