Equipment trackingThe JDLink Machine Monitoring System uses GPS to help fleet managers track equipment and prevent theft. The hardware plugs into a machine's electrical system to monitor location, functions, hours, fuel information, and other critical data. Users view the data at a password-protected Web site. Choose from four levels of service to fit your operation's specific needs. John Deere Construction & Forestry. 309-765-8000. www.johndeere.com.