I bet it's not TL;DR. :) Because if I asked something and got a reply, not reading it would be disrespectful to the author, no matter how long the reply is.

> In order to receive notifications

Your answer would be absolutely perfect if you added "from a remote server". I was slightly confused, wondering what kind of notifications an app is supposed to receive.

Thanks for answering. Your answer is great.

Also, now I'm curious how they do it while sending only minimal identifying data. I was wrong thinking that it would be immediately clear. I wonder if TheCoreh is correct about proxying.

Oh, and you don't need to answer if you don't want to. I can do my own research.