AS long as he has wifi turned on, he gets a message asking if he wants to download. He says yes, and over it comes. I think he has to be looking for the message, though. There's no ring, or anything like that.
It's great for passing photos to people. I took a photo of a class, and then I can distribute the photo to the class, or at least the 80% of them who have iPhones. Just took a few seconds.
Also great for uploading files to your own desk top from your phone. (In fact, if you want to know what the other side has to do, try it)