To use protected Research In Motion APIs in your BlackBerry device application, you must first get code signing keys from RIM. For more information about code signing and to register with RIM to use protected APIs, visit www.blackberry.com/eng/developers/javaappdev/codekeys.jsp.
If a BlackBerry device application tries to access protected RIM APIs, the BlackBerry Java Plug-in might display warning messages in the Java® editor window or in the Problems view. The warning messages appear next to the lines of application code that reference a protected API. You can suppress these warnings if you test your application on a non-secure device.