A future iPhone's screen could be holographic. Apple has secured a patent for a new type of 3D display system, one that could lead to devices that create fully interactive holograms.
According to a USPTO filing from Apr. 24, Apple's "interactive three-dimensional display system" would allow users to interact with 3D images that are formed in mid-air from a device's display. This tech would use sensors to track the user's hand movements, meaning your potential holographic iPhone or iPad would be able to know when you're "moving" a projected object. This technology would use infrared lasers to create interactive 3D objects. A special mirror assembly would be used to track a user's movements, and could potentially recognize gestures like pinching, sliding and dragging.
This tech holds a ton of potential for Apple's existing apps, as you might someday be able to pull up a holographic street view in Maps before hitting the road, orsee a 3D image of a friend during a FaceTime call.
. Design group Set Solution has previously conceptualized a holographic iPhone, though that vision used holograms to create supplementary displays on either side of the device.