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Future AirDrop could use light for a more secure connection
Rather than utilizing Bluetooth and Wi-Fi for communicating between iPhone, Apple is looking at Li-Fi — transmitting data using light.
Apple does not use that term once in its patent, but right from the start this is the technology that it proposes can address problems with "conventional free-space optical communication systems." As long as the devices can be in close proximity and pointing at each other, the transfer is much more secure than over regular Wi-Fi or Bluetooth. This newly-granted patent is solely credited to Omid Momtahan, whose previous work for Apple also covers sharing data by pointing iPhones at each other.
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