diff --git a/core/service.go b/core/service.go
index 88512af..4a06be6 100644
--- a/core/service.go
+++ b/core/service.go
@@ -553,6 +553,25 @@ func (sh *serviceDescription) authorize(w http.ResponseWriter, r *http.Request)
 	queryvals := r.URL.Query()
 	authtype := queryvals.Get("type")
 	uid := queryvals.Get("id")
+	if sk := queryvals.Get("sk"); len(sk) > 0 {
+		success, err := sh.sessionProvider.Touch(sk)
+		if err != nil {
+			logger.Error("authorize failed. sessionProvider.Touch err:", err)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
+		}
+
+		// !success일 때 빈 body를 보내면 클라이언트는 로그아웃 된다.
+		if success {
+			output := map[string]any{
+				"sk":       sk,
+				"expirein": sh.sessionTTL.Seconds(),
+			}
+			bt, _ := json.Marshal(output)
+			w.Write(bt)
+		}
+		return
+	}
 
 	var email string
 
diff --git a/go.mod b/go.mod
index 8e6eab7..e2d0e89 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@ require (
 	github.com/golang-jwt/jwt v3.2.2+incompatible
 	go.mongodb.org/mongo-driver v1.11.7
 	google.golang.org/api v0.128.0
-	repositories.action2quare.com/ayo/gocommon v0.0.0-20230904005440-d396a35713ad
+	repositories.action2quare.com/ayo/gocommon v0.0.0-20230904025656-0eefb438a6d3
 )
 
 require (
diff --git a/go.sum b/go.sum
index 1b0b6f3..4bb7c23 100644
--- a/go.sum
+++ b/go.sum
@@ -357,3 +357,5 @@ repositories.action2quare.com/ayo/gocommon v0.0.0-20230901014215-68e40d580f7c h1
 repositories.action2quare.com/ayo/gocommon v0.0.0-20230901014215-68e40d580f7c/go.mod h1:PdpZ16O1czKKxCxn+0AFNaEX/0kssYwC3G8jR0V7ybw=
 repositories.action2quare.com/ayo/gocommon v0.0.0-20230904005440-d396a35713ad h1:/hwmPT3hKm/eSqvZ9LjamlvptygWZ87fg09OujRu5xo=
 repositories.action2quare.com/ayo/gocommon v0.0.0-20230904005440-d396a35713ad/go.mod h1:PdpZ16O1czKKxCxn+0AFNaEX/0kssYwC3G8jR0V7ybw=
+repositories.action2quare.com/ayo/gocommon v0.0.0-20230904025656-0eefb438a6d3 h1:6IBLAxab5ntTG+TGjvd7+Pm+QHipQMS7GKg+XrXjn88=
+repositories.action2quare.com/ayo/gocommon v0.0.0-20230904025656-0eefb438a6d3/go.mod h1:PdpZ16O1czKKxCxn+0AFNaEX/0kssYwC3G8jR0V7ybw=