I love Ricard Odterlind's work. I really do. This trick? Not so much... The method is solid, sure,
but is based on old low tech solution - that can be achieved easier and cleaner.
You need
arts & crafts here, and the book is not fully examinable.
As an example, you can make an
easier gimmicked book with Psypher, or even have an ungimmicked book with it, and still achieve the
same result.
It also reminded me of the "Word in a million" Nicholas Einhorn method.
Osterlind is a great mentalist. This trick - not so great...