diff --git a/pkcs11/types.py b/pkcs11/types.py
index b40c069..adede71 100644
--- a/pkcs11/types.py
+++ b/pkcs11/types.py
@@ -562,6 +562,16 @@ def digest(self, data, **kwargs):
     
     def set_pin(self, old_pin, new_pin):
         raise NotImplementedError()
+    
+    def init_pin(self, token_label, so_pin):
+        raise NotImplementedError()
+    
+    def login(self, user_pin, user_type=None):
+        raise NotImplementedError()
+    
+    def logout(self):
+        raise NotImplementedError()
+        
 
 class Object:
     """