I'm currently designing a monitoring tool for vehicle parking lot - where I have to inform users every time a car parked and left. User doesn't have to acknowledge the notifications. It is just an alert to user to inform the change. I expect a lot of notifications for the same. How do I design these to make it less annoying for user?
Suppose there are n lanes and whenever a car goes to a lane I need to tell the user that one of the lane has a car. This updates are shown as status such as normal for 1 car waiting, crowded for 10 cars waiting. I need a way to let the user know the status change i.e. normal to crowded and vice versa. One way I can think of is to notify the user but that way I'll be spamming him every time there is a change.