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Re:Google Photos – Can I get out? by whonut on Saturday May 30, 2015 @02:56PM (#9631335)
The only place I can see it getting info like this is a social network, and that means G+...

In all seriousness, could they cross-reference dates in G+ posts and photos to see that you mentioned being on your honeymoon when it was taken? Seems like something they'd do if G+ was actually a thing people used.

Re:Google Photos – Can I get out? by icebraining on Saturday May 30, 2015 @03:10PM (#9631394)
There's the Google Search looking for good place to stay on a honeymoon, the email or hangout message sent to the SO mentioning it, the calendar event, etc.

Even just seeing that you're on an irregular stay in Thailand (which it got from your Android) right after your marriage can be telling.

Re:Google Photos – Can I get out? by whonut on Sunday May 31, 2015 @08:45AM (#9633983)
Completely forgot email, calendar etc.

D'oh.

Re:Google Photos – Can I get out? by walterbell on Saturday May 30, 2015 @03:22PM (#9631441)
Other options are

  Gmail
  Calendar
  SMS
  "Now on Tap" can MiTM content of every Android app
Re:Google Photos – Can I get out? by notatoad on Saturday May 30, 2015 @04:07PM (#9631573)
They've got most people's email and calendar, that's a lot more data than G+.
Re:Google Photos – Can I get out? by jbuzbee on Saturday May 30, 2015 @04:32PM (#9631635)
I am seeing that it uses tags and faces that I previously put on photos within iPhoto and are evidently stored with Exif. So if you used iPhoto to tag your set "honeymoon" it will pick that up.
Re:Google Photos – Can I get out? by wstrange on Saturday May 30, 2015 @06:08PM (#9631940)
Or they can analyse the photo itself. They seem to be getting quite good at picking out faces, scenes, events, and locations in photos.