During play, the unit must be completely open so that it lies flat. If the unit is even partially closed, the page activation may not work properly thus giving responses for another page, other than the active page .

• If the book is torn, bent, curled, written on, marked up, etc, the unit may not work properly and may not recognize the active page. Taping torn pages will not fix the problem. You will need to replace the damaged books.
• If something is blocking the optical sensors, such as dirt, sand, the user’s hands, etc., the page activation may not work properly.