The first scrollable is a skinny one-roll device.
It has been tested for very simple interactions, such as simple animations and text display.
The second scrollable is a bigger one.
It has been tested for simple applications, but also in parallel with scrollable n.1, to experiment with interactions that include the use of two different devices in parallel.
Scrollable n.3 is designed for applications that have more than one control or that require an interaction between two people. The software developed for this setup includes mostly games, such as custom versions of Pong and Space Invaders.
