Job description
Selling ebooks in Prestashop 1.7.2 as a closed online system where the user can browse and read ebooks and/or download them with a watermark applied 'on the fly' (order number, email, name).
We are looking for a universal solution that will simultaneously protect us from copying and theft of content, but because of the educational content, give us the ability to write through the book and complete answers when doing exercises.
Suggestions for solutions and quotes for the work are welcome.