Back in 2012 we originally covered Apple's 3D eye-tracking interface invention that described 3D UI effects such as parallax, interaction within a virtual 3D world and more. Then late in December 2014 we covered Apple's granted patent regarding this technology. The patent was titled "Three dimensional user interface effects on a display by using properties of motion." Today the U.S. Patent and Trademark Office published a new patent application from Apple that shows that they're updating their 3D invention. The additions are key and in sync with a newly discovered patent in Europe today regarding a 3D camera.