How to eavesdrop on my slutty wife

Can anyone give me and advice on how to eavesdrop on my whore hotwife?
Thursday she is going out with a guy will put her into a fuck-coma I would love to be able to listen to him pleasure her inward I can only dream about.
I do not have access tithe areas could plan something? Is their an IPad app or other cell app?
Would gladly share my findings if I have something that can record it.

Part 2 - how about video or pics?

What are your thoughts , Im only allowed to fuck her on occasion so voyeurism is all I have, I need release. I will post her pic on my next post if you like?

Perhaps blackmail?

Here are a few shots that I got of the wife fucking around with her boyfriend at his house. I sat outside in 20 degree weather with a flip cam and took it at an angle from the foyer window. I would LOVE to step up my game with better equipment.

I know how you feel. My wife was cuckolding me with our neighbor. She never let me watch, I could sometimes catch glipses, or shadows...only once got to see him pin her against the door and kiss her. When she would get over to his place, the lights were always turned off. I even went and bought a decent night vision monocular, but couldn't all the way into his room. Very frustrating.

Looking at your other posts, and pics of your wife...she is very hot, and you are one lucky man. Its been fun reading your/your wifes journey. Looking forward to more. Thanks you and her for sharing here.

Thanks Allen I appreciate it! It DOES drive you crazy, I can't stand it!