An excessive number of alerts pushed to a mobile device. When users' smartphones and smartwatches are set to alert them of every message and social media update, the notifications can be extremely distracting. See
notification.
Less Notification Fatigue
A unique feature of a Martian Notifier smartwatch was that vibration patterns could be assigned to specific alerts to avoid looking at every one. This event is the wearer's running time. (Image courtesy of Martian Watches.)