iOS 4.3 is recently rolled out by apple and with that came the ability to use the iPhone 4 as a personal wireless hotspot for up to 3 users.when connecting up to the wireless hotspot with a WiFi iPad 1 or 2, the GPS data is shared with the iPad and allows you to pinpoint where you are on a map.
The regular WiFi iPad could not get GPS information due to the A-GPS module only being included on the 3G model. with this feature it bundled in is quite handy,for those who wanting to see quickly where they are on an iPad.
The WiFi is location aware through being able to track down by IP address/MAC address on a wireless hotspot. This isn’t 100% accurate and can show you within a few hundred meters, sometimes a few miles, of where you actually are. The GPS data passed on is accurate though and pinpoints where you are within meters.The downside is that, it isn’t real time, or near real time like the 3G version of the iPad. Instead, it appears that the iPhone passes over the GPS signals about once a minute.