private static void startService(final Activity activity, final Geopoint dstCoords) {
        synchronized (startingActivityLock) {
            startingActivity = activity;
        }
        final Intent talkingService = new Intent(activity, SpeechService.class);
        talkingService.putExtra(Intents.EXTRA_COORDS, dstCoords);
        activity.startService(talkingService);
    }
Return distance required to be moved based on overall distance.<br>

@param distance in km
@return delta in km
main/src/main/java/cgeo/geocaching/speech/SpeechService.java