After you have secured your mobile phone with a password or pass code you may still want to further protect the data stored on your phone with remote wipe. Remote wipe will wipe the data on your phone and restore all the factory settings. This is not something you would want to do unless you are certain you have lost your phone. In order to set up remote wipe if you have an iPhone you will need to sign up for a paid account with MobileMe. Then you must set up your phone to enable the wipe should you need it. Android phones running 2.2 have remote wipe built in, but you will also need Exchange. Because remote wipe using Exchange can only be done by an administrator of Exchange a better option would be to use the Mobile Defense app. It's a free app from the Android Marketplace which will allow you to perform the wipe from the Mobile Defense website.