Hello there, friend.
To be honest, this is the first time I've heard of this information, and it's very useful in some situations, such as a camping trip or a picnic, when we don't want to bring our phones because almost all mobile phones nowadays have a compass and Google Maps application that does all the hard work for us.
In any case, this is a good post with helpful information.
Thank you for taking the time to share it with us.