Below you will find definitions of common terminology regarding multitouch displays, interaction, and hardware/software development. If you would like to add a term or have a better definition for a particular term, please leave a comment or contact me so I may update the list appropriately.
If you would like to build your own multitouch display, please view the How to Make a Multitouch Surface page.
Multi-touch: An interactive technique that allows single or multiple users to control graphical displays with simultaneous touch and movement
Dual touch: An interactive technique that allows a maximum of two simultaneous touch interactions
True Multi-touch: ‘True’ is occasionally added to emphasize that several (more than 2) simultaneous touches can be sensed. It is often