How do the geotag metadata for ePortfolio objects get populated?

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According to the API documentation, ePortfolio objects can be geotagged. (http://docs.valence.desire2learn.com/res/epobject.html ) As I support a Geography course, I can see some potential use cases for this functionality.

 

Does anybody know how that gets populated? I was hoping that for images that had geotagging data in the EXIF it would automatically populate on uploading to the ePortfolio, or when taking photos with the ePortfolio app on a GPS enabled device, but I haven't been able to do this so far.