Embedding nearby user presence within captured images

A system comprising:

• at least one processor configured to cause the system to:
• review radio messages scanned within an environment for a second mobile device in the environment;
• derive a radio based position estimate of the second mobile device based on the radio messages;
• obtain optical angle and depth estimates from a camera viewfinder to identify an image region associated with the radio based position estimate of the second mobile device;
• obtain a user identifier from the radio messages or based on a device identifier obtained from the radio messages;
• generate metadata of an image captured to tag the image with the user identifier to indicate presence of a user of the second mobile device in the image region;
• and
• output the image including the metadata to an image gallery maintained in a memory.

A method, comprising:

• reviewing, by a mobile device, radio messages scanned within an environment for a second mobile device;
• deriving, by the mobile device, a radio based position estimate of the second mobile device based on the radio messages;
• obtaining, by the mobile device, optical angle and depth estimates from a camera viewfinder to identify an image region associated with the radio based position estimate of the second mobile device;
• determining, by the mobile device, a user identifier based on the radio messages;
• generating, by the mobile device, metadata of an image captured to tag the image with the user identifier to indicate presence of a user of the second mobile device in the image region;
• and
• outputting, by the mobile device, the image including the metadata to an image gallery maintained in a memory.