LH2
As you can see from the posts, you are wrong.
A FIS does not tell you if you are lost.
If you do not believe me or others call Goodwood, Shoreham or any others who offer a FIS and ask them for your position. You will not get what you asked for. Yes I know you may be outside the UK but your statement was generic.
So again, be careful posting inaccurate information.
And before you post back please look up the definition of FIS .