Women cheat. And they're doing it everywhere—celebrating it on Desperate House- wives, confessing their affairs on the Today show to Katie, waving it in our faces all over Ashley- madison, a philandering online buffet for marrieds. Technology makes meeting a new friend and maintaining an extramarital affair that much easier for women today. In fact, 30 percent of those "singles" on dating sites are actually hitched. Your only recourse is to keep a close eye on her—and here are the high-tech tools to do it with. And before you get all "I'd never spy, our love is built on trust," toss this around: One in three women says she would have you followed if she sensed an affair. Consider yourself warned.

Listen in From Anywhere This tricked-out Nokia 7260 cell phone is actually a sneaky eavesdropping device. On the surface the Spy Phone is indistinguishable from an out-of-box model, but hidden components give a remote caller (i.e., you) the ability to activate Listening mode from your cell by dialing a special number. The phone can be accessed without giving any indication she's miked up (the mic is the same she uses for talking with during her calls—the listening experience is the same as what you'd get if she accidentally hit Talk and dialed you), so she has no idea that you're hanging on every suspicious word within range—the call doesn't show up in the phone's history. $2,400; spyworld.com Know When She's Lying Truster Truth Detection software turns any computer into a vocal polygraph test. The program analyzes audio—from in-person or over-the-phone conversations—fed through the mic input for vocal- chord vibrations caused by stress, which fingers a false statement with 85 percent accuracy. Next time she calls to cancel on dinner with the excuse that her boss is pulling a Bill Lumbergh, just watch the screen as you ask all your prying questions: What is she working on? Who is there with her? Did she remember to wax your car before she left for work this morning? $195; pimall.com Stakeout Her Lunch "Meetings" Table for one? Break out the Panasonic PV-GS35 camcorder with telescopic 30X optical zoom to record her from all the way up the block. Capture all the incriminating footage on Mini DV without drawing attention to yourself; the small camera is 4.5 inches long and fits discreetly in your palm. Then confront her with the evidence—or post the footage to mywifeisaslut. com. $500; panasonic.com Track Her Every Move The Slim Trak GPS is a little black beacon of hope for the stay-at-home boyfriend. The heavy-duty magnetic case attaches the clicker-sized device to anything metal—such as the bottom of her car. The satellite-linked snitch relays its location to Slim Trak's servers every two minutes when it's in motion. Access street-level maps of her whereabouts in real time or pore over trip logs that specify location, date, time and speed info. The vehicle's movement also prompts a text alert to be sent to your phone. Now you'll know whether she's taking detours to Dick's place or just meeting up with her old friends Ben and Jerry. GPS, $899; activation fee, $50; Web access, $96 per year ($0.15 per track); thespystore.com Read All Her Love E-Notes Realtime-Spy Plus brings her desktop to you. Send your loved one the spyware's installation file, which is disguised as a JPEG; she'll wonder why that "Cute Pic" of her isn't loading, while the program begins going about the business of logging her every keystroke— e-mails, passwords, files and Web histories. This data is archived on Realtime-Spy's servers, viewable from any Internet-connected computer. Copies of all incoming and outgoing e-mails can be forwarded as well; a search function can filter and send only those with keywords you input, like hotel, husband and horny. $80; computer monitoring.com Get Her Numbers Every time she checks her messages from the landline, she sends her password across the wire. Snag that code with the Phone Manager, a wallet-size box that remembers more digits than Rain Man. Plug it in through a standard jack anywhere along the phone line, and the call logger will store dates, times, call durations and all the numbers dialed—even those en-tered during a call, such as security codes. Set a password and keep the device out of sight so that she won't know that you know. The next challenge: enduring the prattling messages left by her fat friend as you sift through her voice mailbox for a clue to her liaison. $70; pimall.com Watch Her While She Does Your Best Friend The Sharper Image's Secret Security Camcorder Hidden in a Clock is just like any other digital clock, except that it takes videos of anything that moves in front of it. Place it on the nightstand, jet to Vegas for the weekend, and return to download the AVI videos via USB—as much as three hours' worth—to play back all the action, steamy or otherwise. Image quality is reduced in low lighting, but in the best-case scenario, all you'll find anyway is a long grainy highlight reel of dearest twisting around in her sleep—hopefully dreaming about you. $200; sharper image.com Know Who's Coming and Going The KPC S190 CDV Peephole camera by KT&C records color video of anyone entering or exiting your castle. The weatherproof device is motion-activated and connects to power and a DVR with a single wire, so installing it won't require remodeling the house. Kept camouflaged among office equipment and connected through a network router, Sanyo's DSR300 can be accessed live online, or you can save hours of footage on the hard drive for later analysis. Pro tip: An untucked shirt on the way out could mean he serviced more than the satellite box. Camera, $119; DVR, $395; spytown.com

Get the Facts on Infidelity. and Then Be Afraid.

• One out of every 2.7 couples is affected by an affair.
• 24 percent of men and 15 percent of gals have cheated on a spouse.
• 43 percent of Web users have engaged in some form of virtual humping.
• Of marrieds who have an online relationship, 31 percent eventually meet their virtual paramour in real life.
• A website for married folks looking to hook up— ashleymadison.com—hosts 525,000 members.
• One in 10 emails received at a site that advises cheaters in the art of the tryst—philanderers. com—comes from scorned spouses.
• One-third of all divorce litigation involves a partner getting it on online.
• Cost of an annual membership to Alibinetwork, an online service that provides alibis and fake confirmation letters (in one- to five-day increments) for bogus weekend seminars: $35.
• Cost for the most popular alibi, a phone number in any area or country code staffed by an operator trained in accents pretending to be a hotel receptionist: $275.
• Cost of Alibinetwork's most expensive custom alibi to date: $1,500.

High-Tech Signs She's Cheating on You

• A recent switch to online billing for cell service indicates that she's wary about exposing her call history.
• A squeaky-clean SMS log is also suspect.
• Is she trolling online mating sites? A total lack of Web history is a dead giveaway, especially for someone who doesn't even
• clean out a hairy shower drain.
• She owns a calling card—thereby covering her phone tracks.
• She picks up a new hobby that involves long drives, changes of clothes and loss of cell reception—like spelunking.
• Every time you enter the home office, she immediately restores a marathon game of Minesweeper.

Need a Divorce Lawyer?

Raoul Felder has been involved in more than 8,000 divorce cases and has represented Rudy Giuliani, Robin Givens and the former Mrs. Martin Scorsese.

In your first divorce case you demonstrated that the bride had banged the best man. Is hanky-panky the biggest marriage-buster?
No, it's boredom. Boredom leads to a lot of other things. It's almost inconceivable that as people grow older they don't grow apart.

Do a lot of online affairs end up in divorce cases?
Oh my god, it's terrible how many of these cases involve this online business. It's a remarkable form of adultery in that there's always a cyber-trail. Years ago in New York, at around 7 o'clock at night, you would see all the men walking their dogs in the streets and going to phone booths to call their girlfriends. Now they're using computers to contact them.

How can a guy protect himself from his potential future ex-wife? Get a good prenuptial agreement. Or be poor: If you've got nothing, she can't take anything.
Can she take you for everything if you don't get the prenup?

Most states are moving toward splitting a couple's assets 50-50. But that still means you spend half your life amassing money and have half of it taken away.

What if you have separate bank accounts?
It doesn't matter whose name the money's in, it's all in the pot.

How do couples decide who gets what goods?
They argue. They argue about cars, jewelry and pets. The law treats a pet as a thing, as an item. Unfortunately, in people's lives they're more than that.

Does the husband always lose the house?
If there are young children involved, the court will allow the wife to stay until the kids graduate school, because it would be cruel to order the house sold and the money split.

You've been married for 41 years. How have you managed to stay out of divorce court yourself?
I've never had an argument with my wife. I get paid to argue. Why would I do it for free?