Back in the fall, Google introduced a wireless version of its mapping application, Google Maps, for Palm OS PDAs and smartphones. This software is now available for Windows Mobile devices.

Compatible with smartphones, Pocket PCs and cellular-wireless handhelds running Windows Mobile 2003 and higher, Google Maps enables users to view interactive maps and satellite imagery, find local businesses, get point-to-point driving directions, and receive live traffic updates. Windows Mobile specific features include contacts integration and support for tap-and-hold menus.

And since the Windows Mobile 5 edition of Google Maps is GPS (Global Positioning System)-enabled, those with handhelds running that platform and integrating the location-based technology can view their current location in real-time. Google Maps automatically displays the user's location on a map as a flashing blue dot, and factors in that location whenever users search for local businesses or request driving directions.

A receiver gathers pulsed signals from as many of the two dozen or so GPS satellites orbiting the earth as it can lock in. Using triangulation --by measuring and comparing the travel time of individual signals - the receiver calculates its position, and it's accurate to within twenty yards or so.

First introduced in November 2005, the free Google Maps software is also available for J2ME-enabled devices and color BlackBerry wireless handhelds.

According to Palm, Google Maps, which is already shipping with Palm's new Treo 680, will be extended across its entire Treo smartphone line.