To deter theft of off-highway equipment, manufacturers must look at more than just putting padlocks on units. Most security devices can be overcome in some manner, given enough time. It then becomes a matter of establishing identification of the unit and determining rightful ownership. This requires having an identification number that is unique for each unit which can be readily found. If the primary identification number has been removed, a cross-check of component identification is needed. In addition, the owner must have some form of proof of ownership that cannot be copied or counterfeited.