Book of Secrets - uGearsLock your secret notes, precious treasures, or other personal items inside the Book of Secrets from Ugears and keep them safe from curious eyes. Books have been used to hide items, in real life and in fiction, for almost as long as there have been books. Homeowners can conceal valuables from burglars by hollowing out a book and placing it on a bookshelf with other tomes. The secret book is easily found by the homeowner, but nearly impossible to find