An example of augmented reality on an iPad. - Apple
Being several participants in the same augmented reality session usually involves sharing the mapping on a server. Apple wants instead to privilege the transfer of data between iPhone.
How to develop an augmented reality system while protecting the privacy of users? This puzzle, Apple is about to solve it. He would take advantage of the WWDC that opens this Monday, June 4 to present a multi-user AR process that would use a direct connection between iPhone.

This would prevent information like mapping the room in which we are passing through Apple's servers. Places that support augmented reality may be private, such as home or office. According to Reuters, the system would work between two iPhone, but it is still unknown whether it will be possible to connect more than two at the same time.
Google keeps the information for seven days
This multi-augmented reality allows all users to see the same object in the same place at the same time. This opens the door to multiplayer systems for AR games or collaborative work for creative applications.
If Apple chooses this method, it would stand out strongly from the one used by Google and presented at its last I / O conference. Moutain View's company prefers that the first user uploads the map of the place on its servers to then redistribute it to the other participants. Google said it is deleted from its servers after seven days.
However, this has the advantage that the first user can leave the session without the other participants being impacted. Apple's system could involve the end of a game if its initiator leaves it. Answer this June 4th at the opening keynote of the WWDC that will make you live live from California.

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