What is one requirement for badge holders regarding airport security?

Displaying badges at all times when in secure areas is essential for maintaining safety and security at the airport. This requirement helps ensure that only authorized personnel are granted access to sensitive areas, which is critical for preventing unauthorized access and ensuring a secure environment. By visibly showing their badges, individuals demonstrate their legitimate right to be in the secure areas, facilitating the identification process for security personnel. This practice supports the overall security operations at the airport, allowing for quick verification and enhancing the safety of all individuals in those zones.

The other options do not align with the established protocols for security and do not contribute to the same level of safety and transparency required in restricted areas.