But, I think what the manufacturers of this GPS add-on did good was to provide their mapping software for both users and non-users of their equipment absolutely free from any charge whatsoever. Yes, the Geo-View free application can be installed on your Visor's actual main memory without the damn product on your handheld! This would allow you to gain the information you need, like the maps within your immediate area, quite accurately and downright faster than most GPS add-ons for handhelds. But, I think you should carry a bag, or something, to house your handheld and this tool since it's just too damn bulky for comfort!