Pi is the design for a visual 'Roladex.'
It can be used to transfer 'work in progress' files between various devices.
Files are grouped in concentric rings, one for sound another for images and the last for other data. Storage is flexible to suit the needs of the user. The interface can be accessed from any device that has internet. The devices are represented by a piece of 'pi' so the user can keep track of files within each device. Navigation is by movement, which becomes more intuitive as the user learns to transfer files by 'feel.