I like ideas, where technology turns against humans. sorry, if I pull it to the realistic side: if it's not a mystery thriller (where some supernatural forces could do the job, thinking of "Ring" and "The Call"), isn't it a problem to hack a iPhone now? (that's one reason why iPhone stealing went down) and if you couldn't hack it, how could you send photos to the cloud?

Katha, if you read the article, you'll see this actually happened. Not magic, but real life.

I see, but the article don't explain the technical stuff (or I missed it, I was quite fast reading and quite tired) and 2013 is quite a time ago concerning technical stuff. And it was before FBI is sues Apple to unlock phones. Therefore it was quite in the media, that it's quite impossible. But sometimes solutions are simple - I know some friends who haven't use any code for their phones for years. One, because she feared that her toddlers would brick the phone when putting in wrong codes. Quite an easy explanation. Sorry for bothering you, but I'm always very picky concerning explanations during exposition. After that I can go with a lot of stuff. Just a try to start up. I recently read an (German) article about strange phenomenas concerning mobiles but all had a logical explanation. If the holder of the iPhone stays within reach, the "find your iPhone" option could be a nice ticking-clock option every-time he/she uploads a photo to the cloud.

things like that often happen in spy-movies (James Bond, also Homeland serial). or perhaps the protagonist is a developer for internet security - and someone takes revenge on him/her or an old love could easily know the code, because most people do not change them very often / of even the wife/husband, who is a killer...