Apple is investigating ways to join images from many iPhone cameras, and optionally to control all those devices simultaneously to capture a 360-degree image. As Apple continues to research periscope cameras for the next iPhone, newly-revealed patent applications show that it is looking to leverage multiple cameras on multiple devices. "System For Producing A Continuous Image From Separate Image Sources," is concerned with synchronising multiple iPhones, and then combining images together on one. "A photographer, videographer, or other person may desire to capture images using several image-capture devices," says Apple, "and combine the images captured by each of the individual devices into one continuous image."