A turnstile gate barrier is a mechanical gate installed at the entrance or exit of a secured area to control the flow of people. It typically consists of horizontal arms or bars that rotate horizontally, allowing one person at a time to pass through. Turnstile gate barriers are commonly used in various settings, including public transportation systems, stadiums, office buildings, amusement parks, and secure facilities. https://www.novusapl.com/Enhancing-Security-and-Access-Control-through-Turnstiles.php