Can you catch your spouse cheating on you by tracking their cell phone?
Yes, with technology advancements today you can catch your spouse red handed. Today's mobile phone technology carries mandatory GPS (Global Positioning System) technology right inside.
This rule was actually a federal mandate in 2001, that states all cell phones must be equipped with a GPS chip by 2005. If not compliant providers charged users fees if their phone wasn't compliant. Prior to the federal mandate the location of a cell phone was only as accurate as the tower it was roaming to. With the new GPS chip technology your cell phone can actually track you with in 300 feet of your location. Each time your phone attempts to roam out and looking for a better connection the provider will record your coordinates. This information is available to emergency workers and police officials only.
So how do I use this technology?
In the past 2 years GPS cell phone software has been created that commutates with the mobile phone using a GPS chip. The software allows you track exactly where the phone is using your pc. There are additional bells and whistles that will alert you when the phone moves outside a specified zone or region you configured.
So the bottom line is yes you can catch your spouse cheating on you by tracking their cell phone, but you have to have GPS tracking software installed on the phone.
Wikipedia - Enhanced 911
FCC - Wireless 911 Services