Does CyberLink Face Finder share my personal photos online or send them to a CyberLink server when I am using the face detection and search features in the app?

The CyberLink Face Finder's face detection and search features are completely operated offline on your local PC without using an Internet connection. None of the face data or photos will be transmitted out via the Internet when you're using the search features.

An Internet connection is only required to determine your subscription status when you launch the software, or whenever you launch the free edition.