Library app for children

Lately, I was on the 2-day design/UX mission (hackathon) to make the library cool again and empower children for the library of the future. Explored the concept for an app for children that mainly replaces library loan card. But it can be so much more, right? Their own world, that's not alive only in the books. It was my first time that children were in the focus (and, it's a challenge!). But I had fun, that's for sure :)