I'm sure this is not a new thing, but I just found out about it, and I think it's pretty neat!
Works for all counties except the following, who consistently disable AIS and LRIT for various reasons: China, Russia, Iran and Senegal.
So while the International Maritime Organization requires these devices be enabled, the aforementioned counties just ignore it when disabling AIS suites their purposes (Illegally changing flags during voyage, poaching, etc).