Beware, cheating husbands and wives. The use of a GPS device to track your whereabouts is not an invasion of privacy in New Jersey, a state appellate court panel ruled today. Based on the battle of a divorcing New Jersey couple, the decision helps clarify the rules governing GPS technology increasingly employed by suspicious spouses – many of whom hire private investigators. “For the appellate division to say that it’s not an invasion of privacy is a wonderful thing for private investigation business,” said Lisa Reed, owner of LSR Investigations in Flemington. It’s been something we’ve been haggling over for some period of time.”