When people wear hats or helmets, they often add some logos on their heads. These signs can provide information or identify people. For example, sports players often add logos to their helmets or hats to identify the country they belong to or the team they represent. People such as government workers or military soldiers often add signs on their heads to identify their work unit or military rank.

The logo on the head not only conveys identity information, but also serves as a safety sign. When goggles are used to stare at iron, there are often some signs indicating rank, position or department to quickly identify one's identity under special circumstances. At the same time, in some emergencies, the signs on the body can also provide necessary information to rescuers. In outdoor adventures or other similar activities, the signs on the head are often used to locate the venue or signal teammates.

The logo on the head is not only a functional device, it also carries certain cultural value. People can feel a sense of belonging and identification with a place or organization through the logo on their head. The logo on the head has also become the carrier of various cultures or groups. For example, various market brands often print their logos on hats or use their trademarks as helmet decorations to create a brand cultural impact. At the same time, among some groups, the logo on the head also has a traditional meaning and is often considered an indispensable detail for the occasion.