Google has announced a new feature that allows users to share their locations among a chosen network of friends.
The "opt-in" Latitude service uses data from mobile phone masts, GPS, or wi-fi hardware to update a user's location automatically.
Users can also manually set their advertised location anywhere they like, or turn the broadcast off altogether.
The service has raised a number of security concerns, as many users may not be aware that it is enabled.
Latitude is based on Google's My Location feature that has been in place since last year.



source: bbc