This feature is only available on Premium Plan
While mouse, keyboard & screen locks in Photolock™ primarily aim to block a non-technical user's attempts to download your images, a person who knows how to view the code of a website can locate the image in the code and download from there.
Source Code lock makes it harder for a user to capture your images from your website's source code. This lock uses various methods to detect a visitor's attempt to view the source code, and when discovered it hides the code from the user.
The code will be close to inaccessible from a web browser when this lock is activated.