I am creating a document that will be finished using Acrobat 9 Pro.  The document will allow users to write their name in a single text field once, then everywhere else in the document the name will appear identically.  Acrobat does this already, but I would like to suggest adding a "LOCK & UNLOCK FIELD" feature in order to protect the field from further changes.

To the end-user this would be "LOCKABLE" and "UNLOCKABLE" in Adober Reader.  I attached a simple example.  The designer will be able to choose where the lock goes.

This would enable text and numbers to be locked down in Adobe Reader, when extended rights are applied.

Please see my example and let me know what you think.