Hi i made couple videos and books for my customers. So, my question is - how can i protect those content from others? That only my customers in the list can see them? thanks
create special login accounts for them where they can access the content after they enter the password given to them.
you can also make the site copyscape proof site. so that no body copy them. use www[.] copyscape [.]com it realy help you.
You can either code the books or whatever in PHP then have them login for it, or you can just use a simple .htaccess and give them a username and password to login with.
There a programs if you google HTMLProtection that convert the code into a Javascript that decodes by the browsre back into HTML - i have used it in the past and it worked a charm! Footylad