Disney and Apple adding "tactile rendering" to Touch Surfaces
Disney created an algorithm that creates tactile feedback on tablets by using vibration using Xbox's Kinect, which I would imagine would parallel Google Glass.
Here is the rest of the article: http://www.extremetech.com/extreme/168125-disney-creates-tactile-touchscreen-feedback-for-virtual-3d-objects
Here are two patent sketches on tablet tactile feedback from Apple:
With context to an interface in a car: