An accordion barrier  is a versatile crowd control device used to create temporary barriers or boundaries in various settings. This type of barrier is designed to be portable, flexible, and easy to deploy and retract as needed. It consists of a series of interconnected panels that can be expanded or contracted like an accordion or folding gate. The panels are typically made of sturdy materials such as metal or durable plastic, ensuring stability and longevity.

These barriers are commonly used in public spaces, events, airports, construction sites, and other areas where crowd management or restricted access is required. They can be quickly set up to cordon off restricted areas, create queuing lines, or guide people in a specific direction.