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By Kenneth Leftin, Software Engineer

With the recent addition of OAuth 2.0 support for the Latitude API, it is now easier than ever to start writing applications that utilize users’ location history or current location if they have opted in to sharing this information.

This post includes some examples of how you can use the powerful Latitude API to make compelling location-based applications.

Location History

There are many interesting ways you can use location history to create an interesting app. For example, Latify shows my location history on my Android phone so I can easily keep track of where I’ve been. You can use location history to answer questions like "Where was I on September 17th?" or you can analyze location history to show interesting stats. You can also export location history to Google Fusion Tables.

The possibilities expand when you use location history in conjunction with other data sets. For example, you can show location history lined up with transaction history, RSS feeds, or photo albums so users can see exactly where they were for a particular purchase, news event, or photo.

Current Location

The Latitude API allows you to access a user’s current location from a mobile device or a web server. For example, Moveable Weather allows users to call a phone number that tells them the weather based on their current Latitude location.

If you’re writing a mobile group messaging app, you can use the Latitude API to let users opt in to location sharing, allowing everyone in the group to see everyone else’s current location, without needing any location logic in your app.

These are just a few examples of the features of the Latitude API, which also includes storing location history, accessing city level location, and deleting location history. Check out the documentation to get started, or try browsing featured applications to get an idea of what you can build.

Kenneth Leftin is a Software Engineer on the Google Latitude team. When he's not programming, he might be seen playing music around the San Francisco Bay Area.

Posted by Scott Knaster, Editor

2013, By: Seo Master