Find my iPhone / Find my iPad service from Apple is now available free for devices running iOS 4.2.1. The feature will show your your iOS device on a map as well as let you control it remotely by locking it, displaying messages or even remotely wiping all data from your device. It's much like the HTCSense.com service HTC announced a few months back during their event in London.
It's more than worth taking a look at, especially since this can be the difference between the frustration of a lost iPhone / iPad with personal information or having your device back in your hands, unharmed.
According to Apple via press release:
The Find My iPhone (or iPad or iPod touch) feature is now free to use without a MobileMe? subscription and helps you locate your missing device.* The Find My iPhone app is a free download on the App Store? and lets users easily locate a missing device on a map and have it display a message or play a sound. Users can even remotely lock or wipe data from a lost device to protect privacy.
(*The free Find My iPhone feature is available for iPhone 4, iPad or new iPod touch (4th generation).
We will post a link with a how to when the update goes live. It's definitely worth getting. Now, if only MobileMe will go free soon. For now, we wait for iOS 4.2 which releases today.