Badges, also known as brooches, badges, or MEDALS, serve a wide range of roles in different social and cultural contexts. The following are the main functions and uses of the badge:

1. ** Identification ** :
- Badges are often used to identify the identity of the wearer, such as occupation, position, organization, etc. For example, police officers, firefighters, and other public service personnel often wear specific badges to indicate their official status.

2. ** Honors and Recognition ** :
Similar to MEDALS and trophies, badges can be awarded to individuals or teams in recognition of their achievements or contributions in a specific field. In military institutions, MEDALS awarded to soldiers for heroism or special service are an example.

3. ** Commemorative Significance ** :
- To celebrate important events, festivals or anniversaries, special edition badges are produced and distributed to participants or the public. These badges not only record historical moments, but also become valuable collectibles.

4. ** Proof of Membership ** :
- Societies, clubs, professional associations and other organizations often issue badges to confirm the identity of their members and enhance the sense of belonging and identity among members.

5. ** Activity Participation Certificate ** :
- At large events such as conferences, exhibitions, concerts, the badge can be used as an admission ticket or pass, ensuring that only authorized personnel have access to certain areas.

6. ** Brand Promotion Tools ** :
- Companies can promote brand image or new products through customized badges, and employees wearing company badges can also help enhance the visibility and professional image of the company.

7. ** Traditions and Cultural Symbols ** :
In some cultural and religious contexts, badges carry deep traditional significance and may be part of a family heritage, a national symbol, or an expression of faith.

8. ** Education and Training Certification ** :
Schools, training institutions, etc., may award badges to students who have completed the course as proof that they have reached a certain learning standard or skill level.

9. ** Social Interaction Media ** :
- In some social situations, exchanging badges becomes a means of communication, promoting the development of contacts and friendships between people.

10. ** Art and Creative Exhibition ** :
- The badge itself is also a small work of art, designers can show unlimited creativity in a limited space, making it an expression of personal style or interests.

In short, the badge is not just a simple accessory, it plays an important role in daily life and social interaction, from formal identity verification to informal emotional transmission, are inseparable from this small object. Each badge has a unique story and value behind it, reflecting the life experiences and personal characteristics of the wearer.