diff --git a/README.md b/README.md
index 76c7842..679fd95 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,8 @@
 
 ![example.png](./docs/example-logs.jpg)
 
+![checkin.png](./docs/checkin.png)
+
 ## Features
 - [x] Line Notify support after checkin.
 
diff --git a/act/api.go b/act/api.go
index c7dc649..573e5b5 100644
--- a/act/api.go
+++ b/act/api.go
@@ -182,23 +182,31 @@ func (e *DailyHoyolab) GetCheckInInfo(hoyo *Hoyolab) (*ActInfo, error) {
 	return &res, nil
 }
 
-func (e *DailyHoyolab) DailySignIn(hoyo *Hoyolab) (*ActSign, error) {
+type ActSignRisk map[string]any
+
+func (e *DailyHoyolab) DailySignIn(hoyo *Hoyolab) (bool, error) {
 	time.Sleep(1 * time.Second)
 	raw, err := hoyo.ActRequest(e).SetBody(map[string]string{"act_id": e.ActID}).Post(fmt.Sprintf("%s%s", e.API.Endpoint, e.API.Sign))
 	if err != nil {
-		return nil, fmt.Errorf("api::%+v", err)
+		return false, fmt.Errorf("api::%+v", err)
 	}
 	if raw.StatusCode() != 200 {
-		return nil, fmt.Errorf("api::%s", raw.Status())
+		return false, fmt.Errorf("api::%s", raw.Status())
 	}
 
 	var res ActSign
 	if err := actResponse(raw, &res); err != nil {
-		return nil, fmt.Errorf("api::%+v", err)
+		return false, fmt.Errorf("api::%+v", err)
 	}
 
 	if IsDebug {
 		log.Printf("%s::%+v\n", e.Label, res)
 	}
-	return &res, nil
+
+	risk := res["gt_result"].(map[string]any)
+	if risk["risk_code"].(float64) > 0 {
+		return true, nil
+	}
+
+	return false, nil
 }
diff --git a/docs/checkin.png b/docs/checkin.png
new file mode 100644
index 0000000..ac19272
Binary files /dev/null and b/docs/checkin.png differ
diff --git a/main.go b/main.go
index 14a6a8c..1094913 100644
--- a/main.go
+++ b/main.go
@@ -128,11 +128,19 @@ func main() {
 					continue
 				}
 
-				_, err = act.DailySignIn(hoyo)
+				isRisk, err := act.DailySignIn(hoyo)
 				if err != nil {
 					log.Printf("%s::DailySignIn    : %v", act.Label, err)
 					continue
 				}
+				if isRisk {
+					if hoyo.Notify.Mini {
+						getAward = append(getAward, fmt.Sprintf("Challenge captcha (%s)", act.Label))
+					} else {
+						getAward = append(getAward, fmt.Sprintf("*[%s]* at day %d challenge captcha", act.Label, resInfo.TotalSignDay+1))
+					}
+					continue
+				}
 
 				if getDaySign < 0 {
 					getDaySign = resInfo.TotalSignDay + 1