4G OBD Gps Tracker EZ-Zero Install Real-Time Teen driver, small business. Requires Air time subscription, as low as $19.95 per Month Email alerts for tampering, speeding, movement after hours, geofence, etc. No installation. Simply plugs into OBD-II port on every vehicle manufactured since 1996. 3G Gpsnvision EZ install saves all of your vehicle information allowing you to review your vehicles locations and bread-crumb trail for 3 months.. ideal for tracking business fleets as well as teen drivers and aging adults.