There are a number of websites that let you tag people in photos, such as Facebook and now flickr, but is there an EXIF standard for tagging who is in a photo, and where they are?
Answer
Adobe's XMP metadata standard supports information defined by the Metadata Working Group (MWG), which includes a definition of how to store face tagged data. See:
Adobe XMP: http://www.adobe.com/products/xmp/standards.html MWG: http://www.metadataworkinggroup.com/ where you can click on the specifications, download the PDF, and then look at page 51 onward.
So while this isn't "EXIF" per se, it is metadata stored in the image. I'm just starting now to explore how widely supported this is.
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