Google Latitude has launched for iPhone users. The service released last year by Google allows you to keep track of where your friends are, and your friends can keep track of you. After installing Latitude, it will display your location through Google Maps, to your friends if you enable it to do so. Remember, your friends will always be able to see where you are, so obviously this does raise some privacy concerns.

If you choose so, you can disable the app from sharing your location. This could be useful if you’re going somewhere that you wouldn’t want your friends to see. This is 100% opt-in, so you do know what you’re getting into if you download the app. To make the app an extra bit safe, you add the friends that can see your location. Choose wisely.

The app is available on the iTunes App Store now. Latitude is also available on Android phones. Check out the video below.