Husband A installed a software program onto his wife's laptop that took screen snapshots every 15 seconds to confirm she was cheating on him.
Wife B suspected her husband was behind the tracking device she found in a wheel well of her car.
As for husband-and-wife C, she drew him a bubble bath and quickly raided his BlackBerry, where she discovered proof of an affair.
According to The New York Times, electronic communication is the next big thing in ugly divorces, with lawyers requesting access to hard drives and emails to assess anything from bank records to infidelities.
"Every keystroke on your computer is there, forever and ever," says private investigator James Mulvaney.