Infidelity — There’s a map for that.

How Google might know what you did last summer -- even if you forgot.

Google Latitude is a service that allows users to see and share their location on a Google map live and in real-time. The service runs on most smart-phones, regardless of service provider, including Apple's iPhone, Windows Mobile, the Palm Pre, and, of course, Google's Android. Latitude relies on a combination of GPS, cellular tower triangulation, and wi-fi triangulation. Having brushed-up on the service for a recent National Public Radio (NPR) Interview, I have since considered Latitude one-part creepy, and two-parts cool. However, the creepy / cool ratio may be shifting.

This week Google introduced a new and improved Google Latitude -- with enhanced features like "Location History".  With Location History Latitude users can go back in time retrace their footsteps, and even see where they stayed-put, and for how long. Kind of cool...yet, very creepy. But practical?

Imagine, for example, you're the owner of a Palm Pre on Sprint's 3G Now Network , having trouble remembering where your were when you told your spouse you were somewhere else? Now, there's a map for that!

But wait -- there's more! How about "Location Alerts"? Certainly, a application that would alert you when a particular individual, say a family member, has left work or school, would be very practical. After a while of being alerted every time someone is, or has arrived, exactly where you would expect them to be, however, could get old. So, Google's geniuses stepped it up a notch. According to Google, Latitude will learn user's patterns and behavior so that alerts can be issued when a person has strayed from their routine -- left at a different time, or arrived at a different place.

For example, if you decide to  staycation with your mistress, you can receive a handy alert when your spouse leaves the office earlier than usual. Or, if traffic is particularly light, Latitude will let you know when it's time for a quick window-exit.

Best of all, when the jig is up, no one has to know, because -- for now -- Google is making all these free services available to you, and no one else... at least, without subpoena powers.

This is deception... on the Now Network.