diff --git a/proto/c2se/frontend/identity.proto b/proto/c2se/frontend/identity.proto
index e46ab40..34ae29f 100644
--- a/proto/c2se/frontend/identity.proto
+++ b/proto/c2se/frontend/identity.proto
@@ -7,3 +7,4 @@ package bet.beteran.c2se.frontend.identity;
 // subject = bet.beteran.c2se.frontend.identity.Captcha
 
 // subject = bet.beteran.c2se.frontend.identity.Signin
+// subject = bet.beteran.c2se.frontend.identity.SigninWithoutSecurityCode
diff --git a/proto/c2se/identity.proto b/proto/c2se/identity.proto
index e703c77..e90bc72 100644
--- a/proto/c2se/identity.proto
+++ b/proto/c2se/identity.proto
@@ -55,3 +55,17 @@ message SigninResponse {
   optional bet.protobuf.rpc.Error error = 1;
   optional Result result = 2;
 }
+
+
+message SigninWithoutSecurityCodeRequest {
+  string username = 1;
+  string password = 2;
+}
+
+message SigninWithoutSecurityCodeResponse {
+  message Result {
+    string access_token = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
diff --git a/proto/ss/identity.proto b/proto/ss/identity.proto
index eb5ec59..a56cd81 100644
--- a/proto/ss/identity.proto
+++ b/proto/ss/identity.proto
@@ -79,6 +79,25 @@ message SigninResponse {
   optional Result result = 2;
 }
 
+
+// subject = bet.beteran.ss.identity.SigninWithoutSecurityCode
+message SigninWithoutSecurityCodeRequest {
+  message Request {
+    string username = 1;
+    string password = 2;      
+  }
+  bet.beteran.core.network.Client client = 1;
+  Request request = 2;
+}
+
+message SigninWithoutSecurityCodeResponse {
+  message Result {
+    string access_token = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
+
 // subject = bet.beteran.ss_event.identity.AfterSignin
 message AfterSigninEvent {
   message Event {