[nicolas314]

True enough, this is in concept the very same as Apple Push Notification (APN) service. Difference is that you are in charge of the server side and handle all the security and uptime yourself. Very cool idea, simple enough to generate a lot of really cool projects.

[Andrew_nenakhov]

No. APNS works differently and iOS devices do not poll Apple's server at frequent intervals. I explained it here [1]

[1] https://news.ycombinator.com/item?id=21338838