A cheeky attention grabber for your site, by leveraging js event listeners
All the script does is wait for the blur event to be triggered Read about it here and switches out the favicon after 2 seconds of the window being out of focus. Have two copies of the same icon and draw a red dot on the second. simple as.
Thrown together to improve engagement for lead generation pages, after being thouroughly Pavloved by little red dots even I have fallen for it.