Hi there,
at the moment there is no function or code in the plugin to do this -
The plugin needs a gpx track file to display.
However, in HTML5 there is a standard function to obtain the visitor's
geolocation, given he is using a device equipped with GPS; see here:
www.w3schools.com/htmL/html5_geolocation.asp
So it may be doable, but i can't see how this would fit in with
displaying a gpx track - the visitor's position could be on the
other side of the world...
cheers, Frank