Connect every computer to a second, large screen on the house facing the street. That way all the neighbors will see what he’s watching. They’ll tell his wife, don’t worry.
Or, you could hook up a helmet when the computer goes on – sensitive enough to feel a human. As soon as he looks at shmutz, ZAP, electrodes in the helmet zap him good – she’ll hear his scream and come running. This way, he stays out of trouble and she can remain calmly in the kitchen baking or ironing etc.