なふだ名札nafuda
1.

A small piece of material or card that displays an individual's name, typically worn for identification purposes in social or professional settings.

2.

An item used to indicate or communicate a person's identity, often worn to help others recognize them.

3.

A tag that features the owner's name, which is commonly used in events, conferences, or classrooms to facilitate introductions.

4.

A labeled marker that provides the name of a person, frequently utilized in educational and organizational environments for clarity and connection.

Example:

自分の荷に名札を付けたけれども、すぐに取れてしまった。