The technique entails looking up numbers. When joint with a good reverse phone directory, this technique can beat private investigators and other methods of catching a cheating spouse. It is so simple to do and you get the information that will be used to catch the cheater in seconds.
What you principally do is find any doubtful numbers that you can get a hold to. You input the numbers into the reverse phone directory and then you learn the name and full address of the owner of those numbers. Knowing the identity of the person who is in contact with your partner can tell you a lot of things.