I have some books that I want visitors to download but do not want bots to get at them. Password protecting via login screen is cumbersome to visitors. I'd like to find a way to secure a directory full of files by encrypting the link to that directory or an individual file. This would be something like: the file name would change with every click. This is like a login without the login screen where you would have to physically click on the link button to access the protected files. Typing in the URL path would be defeated because the filename changes with each attempt. Changing the file name would, in itself, take the place of a password.
Does anyone know of a module or script that might do something like this?