Navizon has released a beta version of the Navizon GPS application for Apple iPhone 2.0 featuring a new option called Locate-by-SMS that allows you to locate your lost iPhone by simply sending an SMS text message to it.

Navizon adds Anti-Theft Tracking option to Find Apple iPhone GPS Location by SMS

When you enable this setting, you need to enter a keyword known to your friends, family or yourself.

When an SMS is received that begins with the keyword you specified in the settings, the software will automatically determine the current location and send a reply containing the location of the device. If the location is in USA and a street address has been identified, then the SMS reply will contain full details, otherwise it will just contain a link to a point on Google Maps.

The program attempts to determine the location three times before a failure SMS message is sent.

Other features include a GPS location tracking option that allows you to track your friends and family members or get yourself tracked.

You can download the latest beta of Navizon v2.0.6b2 on iPhone by loading Installer, going to Sources, clicking Edit and adding http://repo.navizon.com.

There is another program called FindMe that allows you to retrieve your iPhone’s GSM cellular id location via Twitter.