My 95 year old father is still driving but has started having lapses in his memory. He also does not carry a cell phone. This device has provided me with a sense of peace and relief. I know the current location of my dad's vehicle and if it remains in a location I know he requires assistance. Also because he doesn't travel long distances or very often in one day the battery only requires recharging every 2 weeks. This device has truly been a godsend for me and it was so simple to setup. I also like the idea that I can go into history and obtain information as to where my dad has traveled.