I have no idea if this would work, but... Some TomToms have something called ASN - "Assisted Satellite Navigation". It basically keeps you navigating even if it loses the signal, eg in a tunnel. I think it uses tilt switches or similar to work out which way you're going.
And you can get the Event_Logger software for TomTom, here: http://web.tiscali.it/macri/Event_Logger/ Now if you went through the tunnel with ASN turned on, and Event_Logger logging - would it log where TomTom "thinks" you are? Nick Nick Folwell [EMAIL PROTECTED] _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk-gb
