Guest Passes let you share your photos that aren't public.
Anyone can see your public photos anytime, whether they're a Flickr member or not. But! If you want to share photos marked as friends, family or private, use a Guest Pass.
If you're sharing photos from a set, you can create a Guest Pass that includes any of your photos marked as friends, family, or private. If you're sharing your entire photostream, you can create a Guest Pass that includes photos marked as friends or family (but not your private photos).
![Train Attachment by Dominique Robert [Away on Vacation].](http://farm1.static.flickr.com/155/390317723_d38e3e46d4.jpg?v=0)
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