The year was 2009. There were only two Marvel movies so far, Avatar came out, and Apple was launching the iPhone 3GS. It had a brand-new push-notification system that, among other things, would ...

Our smartphone apps are constantly clamoring for our attention—whether it’s a high score that needs beating or a group chat that needs responding to, there’s often a constant stream of pings and ...

Push notifications are the alerts that apps send to your phone or computer even when the apps aren't open. Often appearing at the top or side of your screen, nearly every popular app uses push ...