diff --git a/backend/main.go b/backend/main.go
index da3b115..6b04b54 100644
--- a/backend/main.go
+++ b/backend/main.go
@@ -450,14 +450,30 @@ func connect() {
 			c.JSON(http.StatusOK, gin.H{
 				"result": result,
 			})
+
+		case "check-registered":
+			err := db.QueryRow("SELECT IFNULL(esignid, 0) AS result FROM esign WHERE employeeid = ?", data).Scan(&result)
+			if err != nil {
+				if err == sql.ErrNoRows {
+					result = "0"
+				} else {
+					c.AbortWithError(http.StatusBadRequest, err)
+					c.String(http.StatusBadRequest, err.Error())
+				}
+
+			}
+			c.JSON(http.StatusOK, gin.H{
+				"result": result,
+			})
 		}
 	})
 
 	router.POST("/api/post-registration", func(c *gin.Context) {
 		type RegistrationData struct {
-			Data  int `json:"data"`
+			Data  int    `json:"data"`
 			Data2 string `json:"data2"`
-      Data3 string `json:"data3"`
+			Data3 string `json:"data3"`
+			Data4 string `json:"data4"`
 		}
 		var registrationData RegistrationData
 		if err := c.ShouldBindJSON(&registrationData); err != nil {
@@ -472,13 +488,13 @@ func connect() {
 		c.Writer.Header().Set("X-Download-Options", "noopen")
 		c.Writer.Header().Set("Referrer-Policy", "no-referrer")
 
-		dbpost, err := db.Prepare("INSERT INTO esign (esignid, employeeid, signature, image) VALUES (NULL, ?, ?, ?)")
+		dbpost, err := db.Prepare("INSERT INTO esign (esignid, employeeid, password, signature, image) VALUES (NULL, ?, ?, ?, ?)")
 		if err != nil {
 			panic(err.Error())
 		}
 		defer dbpost.Close()
 
-		exec, err := dbpost.Exec(registrationData.Data, registrationData.Data2, registrationData.Data3)
+		exec, err := dbpost.Exec(registrationData.Data, registrationData.Data2, registrationData.Data3, registrationData.Data4)
 		if err != nil {
 			panic(err.Error())
 		}