diff --git a/client/mifaredefault.h b/client/mifaredefault.h
index 400463eaf..db9c0329d 100644
--- a/client/mifaredefault.h
+++ b/client/mifaredefault.h
@@ -31,7 +31,7 @@ static const uint64_t g_mifare_default_keys[] =
 	0xabcdef123456,
 	0x4d3a99c351dd,
 	0x1a982c7e459a,
-	0xd3f7d3f7d3f7,
+	0xd3f7d3f7d3f7, // NDEF public key
 	0x714c5c886e97,
 	0x587ee5f9350f,
 	0xa0478cc39091,
@@ -42,4 +42,7 @@ static const uint64_t g_mifare_default_keys[] =
 	0x96a301bce267
 };
 
+static const uint8_t g_mifare_mad_key[] = {0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5};
+static const uint8_t g_mifare_ndef_key[] = {0xd3, 0xf7, 0xd3, 0xf7, 0xd3, 0xf7};
+
 #endif