Final answer:
Physical security is responsible for controlling access to areas where e-PHI is stored, critical for protecting health information from unauthorized access and breaches.
Step-by-step explanation:
The aspect of security that deals with gaining entry to areas where e-PHI (electronic Protected Health Information) is stored is known as Physical security. The goal of physical security measures is to prevent unauthorized access to physical locations where sensitive information, like e-PHI, is housed. This is particularly crucial in the healthcare industry as the sharing of digital records among health providers is a method proposed to improve the quality and reduce the cost of health care in the U.S. Meanwhile, ensuring online privacy and security is essential, as seen in recent large-scale data breaches that have put millions of personal records at risk due to compromised website security.