A new update to the Instagram app will let you and your friends tag each other in photos.
Instagram - the photo sharing service now owned by Facebook - lets users apply creative and often retro photographic effects on their images before uploading them to share online.
But the thing is that whenver you wanted to alert someone to a photo they were in, or link their profile to an image, you had to manually '@' them in the commenting area or in the caption.
It would also create clutter at the bottom of photos, depending on how many people or things you're adding.
The '@' technique, however, is really Twitter's thing and not primarily Facebook's (though you can use it in there as well).
So now with the relase of the latest Instagram app, you can tap on the image to tag your friends, or businesses with accounts.