diff --git a/manymouse.c b/manymouse.c
index 7f88582..9149580 100644
--- a/manymouse.c
+++ b/manymouse.c
@@ -40,6 +40,7 @@ static const ManyMouseDriver **mice_drivers[] =
 
 
 static const ManyMouseDriver *driver = NULL;
+static int many_mouse_counter=0;
 
 int ManyMouse_Init(void)
 {
@@ -68,10 +69,18 @@ int ManyMouse_Init(void)
         } /* if */
     } /* for */
 
+    if(retval>0)many_mouse_counter=retval;
+    else many_mouse_counter=0;
+
     return retval;
 } /* ManyMouse_Init */
 
 
+int ManyMouse_DeviceNumber(void)
+{
+    return many_mouse_counter;
+}
+
 void ManyMouse_Quit(void)
 {
     if (driver != NULL)
diff --git a/manymouse.h b/manymouse.h
index 870fa21..b1da917 100644
--- a/manymouse.h
+++ b/manymouse.h
@@ -48,6 +48,7 @@ typedef struct
 
 
 int ManyMouse_Init(void);
+int ManyMouse_DeviceNumber(void);
 const char *ManyMouse_DriverName(void);
 void ManyMouse_Quit(void);
 const char *ManyMouse_DeviceName(unsigned int index);