A "mantrap" is used in physical security to ______?

A "mantrap" is used in physical security to ______?

جسمانی سلامتی میں ______ کے لئے "منتر" کا استعمال کیا جاتا ہے؟
Explanation

A mantrap is a small space with two interlocking doors — only one opens at a time — used to control access to secure areas.

It prevents tailgating (unauthorized entry by following an authorized person) by ensuring only one person can enter at a time.