What technological measure can enhance the physical security of Verifone devices?

Enhancing the physical security of Verifone devices is crucial for preventing unauthorized access and tampering. Intrusion detection systems serve as a critical technological measure in this context. These systems monitor the physical environment around the devices for potential security breaches, such as unauthorized entry or tampering attempts. By detecting unusual activities and sending alerts, intrusion detection systems enable prompt responses to potential threats, thereby maintaining the integrity and security of the device.

The other options, while beneficial in their own right, do not directly enhance physical security. High-resolution displays improve user experience but do not contribute to the security of the device itself. Audit logs for transactions provide important information for tracking and accountability, but they do not prevent physical intrusion. Mobile application interfaces facilitate user interaction but do not provide any physical protection to the devices. Thus, intrusion detection systems stand out as the most effective technological measure for enhancing the physical security of Verifone devices.