Via computer

Modern families often have one computer for everyone, so it will be easier to get to it. But the possibilities are much less, especially if the woman rarely sits down at it.

Look at the history of searches and visited sites. 

Aren't there any dating sites among them, or a hotel site on the outskirts of town where your sweetheart has booked a room.

Log into the girl's accounts. 

In browsers https://www.android.com/google-features-on-android/march-2022/
 you can see the saved passwords from the sites, so you can easily read messages in social networks, mail and other sites.

Read messages in messengers.

 Modern technology allows https://www.tutorialspoint.com/android/android_overview.htm
 save your correspondence history both on your phone and computer. So by running Watsap or Telegram from a computer, you can see your wife's correspondence live. Who knows with whom she will be communicating at this moment.

With the help of modern technology

There are many devices such as android apps
, which can help you expose your wife-husband in no time.

A listening device installed in the car, planted in your purse, left at home. There are models that go off when someone is talking. You won't have to skip through hours of silence.

Watch your DVR recordings - they're often forgotten about and don't hide from their watchful eye. You can see the man walking her out, the man getting into the car, and sometimes hear their conversations on the tape.

Tracking device. Shows where the wife is during the day. If she suddenly left the office and stopped at an apartment building, then you can visit there.

A recorder or camera left at home. Relevant in case the lady stays in the apartment alone. Either you are on a business trip, or she doesn't work, and you come back late.