I believe my husband is cheating on me. But I am not sure how to properly confirm my suspicion. A friend of mine suggested a private investigator, but that is very expensive. I looked on the internet and I found that I can buy a GPS device that can be placed with a magnet under his car and will register every stop he makes. Is this legal or not? Can it be used in NC courts to support a divorce case and property distribution, alimony, etc? Will it help me to have this information to get divorced faster?