What can a man do to stop his wife from cheating on him.
You can both agree to be recording your day to day activities play it at anytime you want to check, correct and see where you needed to improve on. But if you do that without her consent and she get to know and report you. Forget you will end up in jail or prison.
You can employ qualified personnel or a reputable organization to that recording. Note you must both agree or seek her consent to that to her.