I'd like to make an app that allows my organization to add custom tags on top of what's provided in Google Drive/Google Photos. Google photos creates custom albums for each of your contacts, and when you take a new picture, it automatically tags contacts in photos. Where is that data stored? Looking at the Google Drive Rest API for Files (https://developers.google.com/drive/v2/reference/files?hl=en), it doesn't appear to be anywhere. What I'd ultimately like to do is filter the photos in my Google Drive account by contact. Is that possible? Thanks!
Google photos are stored in the drive containers but the photos data is still stored in the old Picasa infrastructure. you can try with the Picasa api