It sounds like you want a to write a PJC component to extend a forms text item that will capture and eliminate the key strokes and mouse actions used to copy and past thus preventing a user from performing this action. There are many examples on the interent of how this can be written e.g. the Oracle Forms PJCs/Java Beans web site. You will need to have jdeveloper to write thise bit of code. Oracle forms also has a tutorial on how to plug the JAR file you generate into your for sessions.