nearest marker

hi,
we have a set of POIs. we want to know if Traccar can determine the nearest marker when receiving a position. we are not talking about geocoding but determining the nearest marker from the received position.
how to set Traccar to do this?

thanks

You would have to implement it in the code.

hi,
please, what is the best place to do it in the code?
WebDataHandler ?, DefaultDataHandler ?, etc...
thanks