diff --git a/cards/iso_card.py b/cards/iso_card.py
index fa6085d..edb8a3e 100644
--- a/cards/iso_card.py
+++ b/cards/iso_card.py
@@ -6,6 +6,7 @@ from utils import C_APDU, R_APDU
 class ISO_Card(Card):
     DRIVER_NAME = ["ISO"]
     COMMAND_GET_RESPONSE = C_APDU(ins=0xc0)
+    COMMAND_CLASS = C_APDU
     
     APDU_VERIFY_PIN = C_APDU(ins=0x20)
     
diff --git a/cyberflex-shell.py b/cyberflex-shell.py
index 9ff3339..788824e 100755
--- a/cyberflex-shell.py
+++ b/cyberflex-shell.py
@@ -230,10 +230,13 @@ class Cyberflex_Shell(Shell):
         self.card.last_delta = None
     
     def do_fancy_apdu(self, *args):
-        "Parse and transmit a fancy APDU"
+        "Parse and transmit a fancy command"
         apdu = None
         try:
-            apdu = utils.C_APDU.parse_fancy(*args)
+            if hasattr(self.card.COMMAND_CLASS, "parse_fancy"):
+                apdu = self.card.COMMAND_CLASS.parse_fancy(*args)
+            else:
+                apdu = self.card.COMMAND_CLASS(*args)
         except ValueError:
             raise NotImplementedError
         
diff --git a/utils.py b/utils.py
index 0352447..9f0b731 100644
--- a/utils.py
+++ b/utils.py
@@ -228,6 +228,11 @@ class Transmission_Frame(object):
     # Stub for implementation in subclasses
     # Semantics should be: c=a.append(b) <=> c.data == a.data + b.data and c.status == b.status
     append = None
+    
+    @classmethod
+    def parse_fancy(cls, *args):
+        argstring = "".join((" ".join(args)).split())
+        return cls(binascii.unhexlify(argstring))
 
 class Command_Frame(Transmission_Frame):
     pass