Apple's tactile feeback

Apple's published patent application 20090167704, titled Multi-touch display screen with localized tactile feedback, has a first claim:

A method for enabling non-visual use of an electronic device, comprising:
presenting a visual display, wherein the visual display includes a virtual button;

associating a haptic feedback response with the virtual button; and

providing the haptic feedback response enabling a user to feel the location of the virtual button.

Of haptic patent claims, see also

http://ipbiz.blogspot.com/2008/10/recorder-on-immersions-litigation.html