An RFID bracelet is a wearable device that incorporates radio-frequency identification (RFID) technology. It typically consists of a band that can be worn on the wrist, containing a small RFID chip and antenna. These bracelets are used for a variety of applications, such as:

1. Identification: 

They can serve as a means of identification for individuals at events, festivals, or amusement parks, allowing for easy access control.

2. Access Control: 

Many organizations use RFID bracelets to manage entry to secure areas, enabling authorized users to gain access without the need for physical keys or cards.

3. Cashless Payments: 

RFID technology allows for contactless payments, meaning users can make transactions simply by tapping their bracelet against a reader.

4. Tracking and Monitoring: 

In certain contexts, such as hospitals or event venues, RFID bracelets can be used to track the location of individuals or monitor their activities.

5. Event Management: 

They are often used in event registration, helping organizers manage attendees and streamline check-ins.

RFID bracelets offer convenience and efficiency in various settings, making them popular in many industries.