What type of turnstile may be utilized indoors or outdoors with limited access control?

Waist-high turnstiles are designed to be versatile and can effectively be used in both indoor and outdoor environments where access control is necessary but requires limited physical barriers. They are often employed in settings like transportation terminals, amusement parks, and corporate offices to manage the flow of people while maintaining a level of security.

This type of turnstile allows for quick entry and exit, making it ideal for high-traffic areas where people need to move efficiently. Additionally, waist-high turnstiles strike a balance between accessibility and security; they are low enough to allow quick passage but tall enough to deter unauthorized entry compared to more open barriers.

While other types of turnstiles, such as full-height or biometric turnstiles, provide more stringent access control, they may not be as suitable for environments where rapid movement is necessary or where the additional security features are not justified. Optical turnstiles, while offering advanced technology for tracking movement, may also not be as robust in terms of physical barrier compared to waist-high turnstiles. Thus, waist-high turnstiles stand out as a practical choice for limited access control across various settings.