Uniden, a manufacturer of wireless consumer electronics, today announced its entrance into the Global Positioning System (GPS) market. I'm a huge fan of Uniden's line of phone products, as evidenced by my Uniden 'Vonage' phone review and my Uniden TRU-8885-2 review. Now Uniden will debut a new line of portable GPS navigation products, Uniden MapTrax, beginning in Fall 2006. One "claim to fame" is that the Uniden MapTrax Product Line will offer the largest GPS LCD screen in the industry - a whopping 7 inches.