RookieDriver.Net said the Lemur Autovision electronic key chain, which was created by Root Four Imagination and is sold by the Web site, uses an LCD screen to display data collected while driving -- including maximum speed, total distance and anytime excessive braking is used.

Corinne Fortenbacher, president of RookieDriver.Net, said the product is ideal for parents of young and inexperienced drivers.

"A quick review of the data collected by the key chain with their teen driver provides parents an opportunity to positively reinforce good driving habits, or take appropriate action to modify poorer ones," Fortenbacher said. "And, it gives teens an opportunity to show they are responsible drivers."

Maurice Tuff, president of Root Four Imagination, said the main aim of the product is to prevent unsafe driving.

"The main focus is that the teenager is aware -- that their parents will be aware; therefore they won't drive recklessly in the first place, because they want the car next weekend," Tuff said. "It is a preventative device, not a catch-you, tattle-tale device."