how to make non copyable html page like google book

I am just curious if I开发者_JAVA技巧 can be able to copy books from google or not.And I am also curious to know what to make such kind of material.

I suppose the best way is to convert the text pages to images. You'd still be able to capture the images, but they wouldn't be in text form anymore; to get them back in their original form, you'd have to OCR them, which is an arduous process.