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 for Eclipse® 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.