All the lap counting and timing is done with the My laps and recorded on the computer. No software/etc. for you to buy. The computer at the track does all the work for you. Most tracks have a screen to look at results and can print those results out on paper. Track computers are set-up for race and practice modes. Tells you all you want to know. Once you get the transponder, install in car/truck and once you cross the loop, it will show up with your number and track official can add your name to that number and your good to go from there on out. Simple. Most people have one for each race vehicle and some prefer to have one and swap it between other cars.