ON-THE-GO-GPS will record the time, date, location, and speed of the vehicle in which it is installed. Where as active type tracking systems require a monthly or yearly data subscription to deliver real-time vehicle data. On-the-Go-GPS accumulates the data on the memory card that you can download at your convenience and never charges a monthly fee. Once you purchase On-the-Go-GPS, you get all the vehicle data for free for as long as you own it.