I have been involved in the design of several technologies, most notably those created within the OutsideTheBox project. The website also offers a portfolio overview of those technologies together with the associated participatory design processes. I create playful physical artefacts that are purposeful and meaningful to people. Additionally, I have been a programmer at Discworld MUD for a few years.
![Three pictures next to each other showing a drawing of the interaction with Adaja, its technological interior and a photo of the final prototype in action.](https://katta.mere.st/wp-content/uploads/2019/02/AdajaNew-1024x259.jpg)
![Photo of the Rattle Cushion alarm system with a pillow in the upper left (including a Yoshi silhouette) corner and a mat on the right (including a Toad silhouette). In the middle the core alarm system in the form of a mushroom is shown.](https://katta.mere.st/wp-content/uploads/2019/02/rattle_cushion.jpg)
![Three pictures next to each other showing a drawing of the interaction with ThinkM, a snapshot of its construction and a photo of the final prototype in action.](https://katta.mere.st/wp-content/uploads/2019/02/ThinkM-1024x258.jpg)
![The picture shows a red blanket with LEDs illuminating it together with a separate control block with several buttons and dials.](https://katta.mere.st/wp-content/uploads/2019/02/time_machine.jpg)
![There are three pictures next to each other again, one where the two new controls form an S together, one showing all parts of the system (the two controls, a colour changing lamp and a box for the additional technological setup, and finally a picture illustrating a child experimenting with a fidget spinner.](https://katta.mere.st/wp-content/uploads/2019/02/time_machine2-1024x226.jpg)