Do you know me or do you know where exactly I am?
I am an island in the atlantic ocean.
Every day, people appear and disappear on me.
I am invisible to humans but machines can recognize me.
Hint 1:
The coordinates are important
Hint 2(big hint):
It has to to something with the defininition of non-existent
This puzzle is only partially by me/inspired by something. You can look it up if you take a look at the accepted answer(by @dantechguy) as he discovered my inspiration.