Physical books are not digital, therefore cannot have DRM. Also, DRM is about managing the "rights" of the copyrighted material's producer - not the end user. C

Physical books are not digital, therefore cannot have DRM. Also, DRM is about managing the "rights" of the copyrighted material's producer - not the end user. Chaining books in a public place maintains the book from being physically stolen, taken from the public's possession.