Google Maps 5.1 Android app adds Check in with Latitude

Google has announced that by using Google Maps 5.1 for Android, you can now connect a location on a map to a real place by checking in there using Latitude. You can still use Latitude to automatically update and share your location, but check-ins let you add context to the location—like captions to a photo. Latitude is built right into Google Maps for Android so check-ins work across Latitude and Maps seamlessly. Just like when sharing your location with Latitude, checking in is 100% opt-in, and you can choose to share any check-in with your friends on Latitude, publicly on the web and your Google profile, or just yourself.

Google Mobile blog describes the new feature so clearly,

For example, I live in San Francisco but often travel around the world. Until today, sharing my location let friends and family know if I was across the globe or in their neighborhood. Now, check-ins let them see the cool restaurant I’m trying in Taipei or join me for a latte at the cafe nearby.

Google has also added a few twists to checking in to make it really easy:
+ Notifications: Turn on check-in notifications in Latitude’s settings and get a notification to check in at a nearby place once you arrive. Never forget to check in again.
+ Automatic check-ins: Choose to automatically check in at specific places you designate, and you’ll be checked in when you’re there. You can talk to friends or finish your bagel without fumbling with your phone.
+ Check out: Once you leave, Latitude knows to automatically check you out of places so friends aren’t left guessing if you’re still there.

You can start checking in by downloading the latest Google Maps from Android Market (on Android 1.6+) and then joining Latitude from the main menu. You can check in everywhere Maps and Latitude are already available. If you’re using the new Latitude app for iPhone, you’ll see your friends’ check-ins, and Google will update the app soon so you can check in too.

You can also see check-ins and your own check-in history at google.com/latitude from your computer.