The main user of this device are children, approximately 2 to 6 year old. Toddlers who are 2 and 3 may need the help of an adult to make the most of it. So we really wanted the device to be friendly and intuitive.  I always said to anyone involved in this project that there are three levels of difficulty for three types of users here: easy, intermediate, and pain. 

• Children (main users) get the easy difficulty
• Educators will get the intermediate
• We get the pain

When my daughter was 2 or 3, she got a Leap Frog book as a present. She really loved it! And I was equally marveled at their page-turning system that allowed you to tap on the page you were in and get the right words. While the system is great, it is not easily interchangeable, so I wanted to transform the concept entirely into into something affordable yet fully customizable.

The main directives for this project are:

• As mentioned, it should be the easiest for children to use. 
• It should be able to detect different pages as you swap them
• The units should be easily replicable, with 3D printing as the first step, but with an easy transition to mass manufacturing when the opportunity arises
• Language packs should be easy to install and exchange, with no code involved. Also, they should be easy to record and distribute
• Hardware and firmware design kept to a minimum cost, with accessible programming / hacking.