The Linja Zax concept is a method for zooming and moving within a 3-dimensional space along the Z-axle on touch screen devices. It is characterized by zooming/moving that is controlled by rotating a stylus or finger around zooming/moving target point on the screen. The zoom/move is activated by panning the view with the stylus/finger in a circular motion. Rotating clockwise indicates zooming in, rotating counter clockwise indicates zooming out.
For a more detailed look into Linja Zax, please visit the Linja Zax website.
A video demo of how Linja Zax works can be found on LinjaDesign's Youtube Page.