The definition of the supported subset of Java Card RMI for the Java Card Platform, Version 2.2.2, implies functional limitations during the execution of Java Card API remote methods:

• CAD client application remote objects cannot be passed as arguments to remote methods.

• Card remote objects cannot be passed as arguments to remote methods.

• Applets on the card cannot invoke remote methods on the CAD client.

• Method argument data and return values, along with the Java Card RMI protocol overhead, must fit within the size constraints of an APDU command and APDU response, respectively.