Actually wouldn’t the link be even more useful if it just auto-responded with the GPS Geo Location like the phone already has? That way you wouldn’t need to rely on a data download of graphics for a map, or someone who might not be able to speak, as opposed to a few bits being uploaded to a web-server and that doing all the back end translation from a compressed format? Assuming the 51.50799,-0.12803 example was easier to send compressed as opposed to plain text or in hex/binary?.