diff --git a/armsrc/appmain.c b/armsrc/appmain.c
index e4bd5f600..c5dda3f75 100644
--- a/armsrc/appmain.c
+++ b/armsrc/appmain.c
@@ -1121,6 +1121,10 @@ static void PacketReceived(PacketCommandNG *packet) {
             em4x50_restore((em4x50_data_t *)packet->data.asBytes);
             break;
         }
+        case CMD_LF_EM4X50_SIM: {
+            em4x50_sim((uint32_t *)packet->data.asBytes);
+            break;
+        }
 #endif
 
 #ifdef WITH_ISO15693
diff --git a/armsrc/em4x50.h b/armsrc/em4x50.h
index 7c9cda575..e71a2fd89 100644
--- a/armsrc/em4x50.h
+++ b/armsrc/em4x50.h
@@ -29,5 +29,6 @@ void em4x50_login(uint32_t *password);
 void em4x50_reset(void);
 void em4x50_watch(void);
 void em4x50_restore(em4x50_data_t *etd);
+void em4x50_sim(uint32_t *word);
 
 #endif /* EM4X50_H */
diff --git a/client/src/cmdlfem4x.c b/client/src/cmdlfem4x.c
index 318df61ec..fdf593fc5 100644
--- a/client/src/cmdlfem4x.c
+++ b/client/src/cmdlfem4x.c
@@ -662,6 +662,7 @@ static command_t CommandTable[] = {
     {"4x50_reset",  CmdEM4x50Reset,       IfPm3EM4x50,     "reset EM4x50"},
     {"4x50_watch",  CmdEM4x50Watch,       IfPm3EM4x50,     "read EM4x50 continously"},
     {"4x50_restore",CmdEM4x50Restore,     IfPm3EM4x50,     "restore EM4x50 dump to tag"},
+    {"4x50_sim",    CmdEM4x50Sim,         IfPm3EM4x50,     "simulate single EM4x50 word (uid)"},
     {NULL, NULL, NULL, NULL}
 };
 
diff --git a/client/src/cmdlfem4x50.h b/client/src/cmdlfem4x50.h
index 8ffda2933..acadd2084 100644
--- a/client/src/cmdlfem4x50.h
+++ b/client/src/cmdlfem4x50.h
@@ -29,5 +29,6 @@ int CmdEM4x50Login(const char *Cmd);
 int CmdEM4x50Reset(const char *Cmd);
 int CmdEM4x50Watch(const char *Cmd);
 int CmdEM4x50Restore(const char *Cmd);
+int CmdEM4x50Sim(const char *Cmd);
 
 #endif
diff --git a/include/pm3_cmd.h b/include/pm3_cmd.h
index 245e2b886..8124cd82b 100644
--- a/include/pm3_cmd.h
+++ b/include/pm3_cmd.h
@@ -513,6 +513,7 @@ typedef struct {
 #define CMD_LF_EM4X50_RESET                                               0x0247
 #define CMD_LF_EM4X50_WATCH                                               0x0248
 #define CMD_LF_EM4X50_RESTORE                                             0x0249
+#define CMD_LF_EM4X50_SIM                                                 0x0250
 // Sampling configuration for LF reader/sniffer
 #define CMD_LF_SAMPLING_SET_CONFIG                                        0x021D
 #define CMD_LF_FSK_SIMULATE                                               0x021E