Motorola’s venture capital arm, Motorola Ventures, has invested an undisclosed amount in Sensitive Object, a developer of multi-touch platforms and natural user interfaces.

Sensitive Object was created in October 2004 to develop a patent protected technology which uses acoustics to analyse sound waves departing from the point of touch, allowing any surface to be used as a touch device.

The software based technology can be used in any product that might benefit from touch based user interfaces, including mobile devices.

Sensitive Object is a spin-off from the French Science National Research Centre. It had previously received funding from venture capital firm Sofinnova.