being a H who cheated, and basically used the internet to do so... i dont know how you might be able to stop him if he really wants to do it. and it would be an extreme amount of work on your part to check all the different ways he could be using to comminicate. i liked some of the above posts about what you can do, and ive been struggling with trying to convince my wife i dont want to have an affair again, but she doubts she would ever be able to find out, and how much work it would be to try and monitor all that i do. here are ways i used to use, if anyone has others add them, ill do my best to add suggestions on how i think i would be sneaky even if she was watching and looking....

1. IE,firefox, Chrome, Safari - basically all the ways he can get on the internet. you have to have history enabled and he can never delete it.
**how it can be beat is by deleting specific history, not all of it
@@@ best way i have thought to make sure i would never feel safe trying to cheat on my wife via the computer... set up a PROXY server that only you can log into. this is the purpose of it...""To log / audit usage, i.e. to provide company employee Internet usage reporting. "" you can probably find a local tech who could set this up for you on craigs list or some kind of site. again, you would have to be the only one that could access logs as he would not be able to fake this.
*** ways to get around proxy servers are to connect to other sites and use them to get deeper into the web sites you want. a lot more work, and if you are able to keep good tabs on sites pulled up from the proxy server you should question these sites.

2. email/instant messenger - this one is harder, as you can make accounts almost anywhere, and most dont require a specific app to run, they can run right out of web pages.
** this still can be found out via a proxy, but its going to look like a pretty normal site such as yahoo or meebo. a key logger as suggested above would be very helpful as it would pull out account names and passwords, but legally look into it just in case. browser history also somewhat helpful, but the more he knows your looking the cleaner he is going to make his computer look.

3. work computers... not much you can do on these... big area where my wife is feeling like i can just affairs all over again. the only thing i have is a web app like logmein or something along those lines where i can remote into my computer at work and let her look thru browser logs like about.

4. smartphone... hard again, you can check phone records, most should show numbers texted and called, some providers will also let you set it up to read text messages for a fee. (something he would have to agree to)
*** can still install apps on the phone that 'hide' text messaging as just data and not phone numbers, plus you can install apps on the phone for yahoo or other IM services.

5. public computers... no way to track this.


other over all suggestions, there is an app out there you can put on his phone that will tell you his exact where abouts via GPS. set up an account on the computer where he has no admin rights to delete or modify any thing he uses the computer for.

if i think of anything else ill let you know. i got caught once and tightened it up, started just really using work computer to find people to talk to and have affairs with. hopefully by having him agree to a lot of this, the effort to cheat will not be worth it.

just my 2 cents on how to try and get full transparentcy. the PI might be the only way to be 100% sure. and ive never used one, but you could maybe pull the cost down by know the times he was not with you. however a lot of the time i would have affairs and one of the things that still floored my wife, is when did i even have time... i would sneak out after she was asleep to get 'food' or something and she would not know how long i was gone. i would meet the OW at lunch at work, or take whole vacation days off and tell my wife i was at work all day. and then if she ever went out with kids i would go out as well... sorry not trying to sound grim but it does all depend on how determined someone is to want to cheat.