Mozilla is developing a push notification system for the Firefox Web browser. It will allow users to receive notifications from websites without having to keep those sites open in their browser.

Apple Vision Pro users may not see many notifications while wearing the headset, with the discovery that visionOS doesn't natively support Progressive Web Apps and Web Push Notifications.

In that way, push notifications may indeed be the smartphone’s defining feature. They are, if nothing else, a perfect avatar of how frustrating it can be to own one.