It’d be easier to add “this book is the property of <name>” to the head and footer of the ebook.
But as stated, anyone that accidentally misplaces their ebook reader, or has it stolen is potentially liable for serious damages …
Seems like once again it’s safer to pirate ebooks than purchase them
It’s cost avoidance … and it has twice the payback of buying the books.
Once when you don’t purchases it, and secondly when you can’t be sued for distributing copyright content.