Which requirement focuses on limiting physical access to cardholder data?

The focus on limiting physical access to cardholder data aligns with the principles outlined in the relevant requirement surrounding physical security measures. This requirement specifically emphasizes the need to restrict physical access to sensitive information to prevent unauthorized individuals from gaining access to cardholder data stored in physical environments.

This requirement addresses controls such as securing areas where cardholder data is processed or stored, ensuring that only authorized personnel have access, and implementing physical barriers to entry. It encompasses the use of security measures like locks, surveillance, and security personnel to safeguard access points.

The emphasis on securing physical locations where sensitive data is handled is critical because it protects against potential breaches that could occur if unauthorized individuals were able to access systems that process or store cardholder information.