Finding your position using My Location feature in Google Maps for Mobile, is something you may be familiar with. That same feature has been added to your Laptop computer.
The Google has announced My Location for Google Maps. When you visit Google Maps with a supported web browser, you will see a new My Location button in the top left corner of the map.
If you have located yourself accurately, then blue circle will indicate that. Click the button again to remove the blue circle, or to re-center the map after you’ve moved it away.
Suppose if you want to travel to some other city, then My Location can be handy to view the map around you,e ven if you don’t know the street address. You can find things to do nearby or work out the best way to get where you need to go. Even when you’re somewhere familiar, My Location is a convenient way to open the map ‘on the right page’.
In order to obtain your location, Google Maps takes advantage of the W3C Geolocation API standard. The Geolocation API is a new feature available in the latest web browsers which allows any website to access your current location. If you use Internet Explorer, you might be familiar with My Location in Google Toolbar, which is able to provide your location in Google Maps, but this is limited to Internet Explorer.
How does it Work?
When you activate the My Location feature, Google Maps asks your web browser for your location. Typically, your browser uses information about the Wi-Fi access points around you to estimate your location. If no Wi-Fi access points are in range, or your computer doesn’t have Wi-Fi, it may resort to using your computer’s IP address to get an approximate location. As you’d expect, the accuracy of My Location varies with your location, and in some cases, Google Maps may not be able to provide a location at all.
Source: Google Blog