I've been looking at those GPS tracker accessories for Nikon digital SLR camcorders and thinking it would be great to have one that would work with my Sony HDR-SR12 to be inserted on the hot shoe and record the latitude, longitude, altitude, and time from GPS (and adjust the camcorder's time setting to match the more accurate GPS time). Any word on whether there might be a way to do that, now or coming down the pike?