a wearable device with an embedded RFID chip that uses radio frequency to communicate with a reader, often combined with LED lights and vibration to alert the user about expiring time. These wristbands are used to manage and notify guests about time limits for activities like park play, track attendance at events, or control access to secure areas based on a set schedule. They can be customized with different materials and features and are often used for their convenience and ability to enhance guest experience and operational efficiency.