diff --git a/scanner/pages/camera/camera.js b/scanner/pages/camera/camera.js
index d202c31..e2fb7c3 100644
--- a/scanner/pages/camera/camera.js
+++ b/scanner/pages/camera/camera.js
@@ -1,7 +1,7 @@
 // pages/camera.js
 //
 import {
-  upload_image_data_url,
+  upload_image_data_urls,
   check_auto_torch,
 } from '../../upload.js'
 
@@ -87,6 +87,7 @@ Page({
   },
 
   onLoad(options) {
+    this.image_data_urls = [];
     console.log("camera page load", options);
     this.setData({
       ai_chat_mode: options.ai_chat_mode,
@@ -145,7 +146,11 @@ Page({
           const image_data = msg.image_data;
           var uca = new Uint8ClampedArray(image_data.data);
           var data_url = data_url_from_frame(image_data.width, image_data.height, uca);
-          this.submit_image(data_url, res.qrcode, res.angle);
+          this.image_data_urls.push(data_url);
+          if (this.image_data_urls.length >= 3) {
+            this.submit_image(this.image_data_urls, res.qrcode, res.angle);
+            this.image_data_urls = [];
+          }
         }
       });
     } else {
@@ -231,13 +236,13 @@ Page({
     this.clean_up();
   },
 
-  submit_image(data_url, qr_code, angle) {
+  submit_image(data_urls, qr_code, angle) {
     this.log("submit image", qr_code, angle);
     this.busy = true;
     var begin = Date.now();
     wx.vibrateShort({ type: "heavy", });
     var gd = getApp().globalData;
-    gd.image_data_url = data_url;
+    gd.image_data_urls = data_urls;
     gd.qr_code = qr_code;
     gd.angle = angle;
     this.log("uploading image");
@@ -279,7 +284,7 @@ Page({
         this.show_verifyfailed();
       }
     };
-    upload_image_data_url(data_url, success, fail, this.data.logs.join("\n"));
+    upload_image_data_urls(data_urls, success, fail, this.data.logs.join("\n"));
   },
 
   show_result_page(serial_code) {
@@ -445,10 +450,16 @@ Page({
       });
       this.handle_image_data_url(data_url);
       if (this.data.done_checking_auto_torch && result.ok && result.angle >= 0 && result.qrcode.length && is_emblem_qr_pattern(result.qrcode)) {
-        this.setData({
-          show_modal: "verifying",
-        });
-        this.submit_image(data_url, result.qrcode, result.angle);
+        this.image_data_urls.push(data_url);
+        if (this.image_data_urls.length >= 3) {
+          this.setData({
+            show_modal: "verifying",
+          });
+          this.submit_image(this.image_data_urls, result.qrcode, result.angle);
+          this.image_data_urls = [];
+        } else {
+          this.reset_busy();
+        }
       } else {
         if (this.data.should_check_auto_torch && is_emblem_qr_pattern(result.qrcode)) {
           this.start_check_auto_torch(result.qrcode);
diff --git a/scanner/pages/camwebview/camwebview.js b/scanner/pages/camwebview/camwebview.js
index 07a28bf..d533063 100644
--- a/scanner/pages/camwebview/camwebview.js
+++ b/scanner/pages/camwebview/camwebview.js
@@ -15,7 +15,7 @@ function make_query(zoom, ai_chat_mode) {
   ret += "&nick_name=" + encodeURIComponent(ui.nickName || "");
   ret += "&tenant=" + (gd.tenant_id || "");
   ret += "&tk=" + Date.now();
-  if (ai_chat_mode) /
+  if (ai_chat_mode) {
     ret += "&ai_chat_mode=" + ai_chat_mode;
   }
   console.log(ret);
diff --git a/scanner/project.config.json b/scanner/project.config.json
index 5fbe02f..43a9118 100644
--- a/scanner/project.config.json
+++ b/scanner/project.config.json
@@ -55,6 +55,6 @@
         ],
         "include": []
     },
-    "appid": "wx8e174d4fb7ef5fb6",
-    "projectname": "emblem-scanner"
+    "projectname": "emblem-scanner",
+    "appid": "wx8e174d4fb7ef5fb6"
 }
\ No newline at end of file
diff --git a/scanner/project.private.config.json b/scanner/project.private.config.json
index 802d02c..3ed19b8 100644
--- a/scanner/project.private.config.json
+++ b/scanner/project.private.config.json
@@ -2,6 +2,13 @@
     "condition": {
         "miniprogram": {
             "list": [
+                {
+                    "name": "camera (dev)",
+                    "pathName": "pages/camera/camera",
+                    "query": "env=dev",
+                    "launchMode": "default",
+                    "scene": null
+                },
                 {
                     "name": "index-redirect-to-chat",
                     "pathName": "pages/index/index",
@@ -23,13 +30,6 @@
                     "launchMode": "default",
                     "scene": null
                 },
-                {
-                    "name": "camera (dev)",
-                    "pathName": "pages/camera/camera",
-                    "query": "env=dev&debug=1",
-                    "launchMode": "default",
-                    "scene": null
-                },
                 {
                     "name": "tenant-26",
                     "pathName": "pages/index/index",
diff --git a/scanner/upload.js b/scanner/upload.js
index 48a2b82..7f72598 100644
--- a/scanner/upload.js
+++ b/scanner/upload.js
@@ -1,5 +1,5 @@
-function upload_image_data_url(image_data_url, success, fail, log) {
-  do_upload(image_data_url, success, fail, log);
+function upload_image_data_urls(image_data_urls, success, fail, log) {
+  do_upload(image_data_urls, success, fail, log);
 }
 
 function check_auto_torch(qrcode, cb) {
@@ -33,7 +33,7 @@ function check_auto_torch(qrcode, cb) {
   });
 }
 
-function do_upload(image_data_url, success, fail, log) {
+function do_upload(image_data_urls, success, fail, log) {
     var ui = wx.getStorageSync('userinfo');
     var gd = getApp().globalData;
     var fd = {
@@ -43,7 +43,7 @@ function do_upload(image_data_url, success, fail, log) {
         qrcode: gd.qr_code,
         angle: 0,
         phonemodel: gd.phone_model,
-        image_data_url,
+        image_data_urls,
         use_roi_verify: 1,
         log,
     };
@@ -52,20 +52,20 @@ function do_upload(image_data_url, success, fail, log) {
         fd.token = ci.token;
     }
     var url = gd.server_url + '/api/v1/qr-verify/';
-    if (gd.debug) {
-        url = "https://themblem.com/api/v1/debug-upload/";
-    }
     console.log("wx.request", url, fd.qrcode, fd.angle, fd.phonemodel, fd.realip);
     wx.request({
       url,
       method: "POST",
-      data: fd,
+      header: {
+        "Content-Type": "application/json",
+      },
+      data: JSON.stringify(fd),
       success,
       fail,
     });
 }
 
 module.exports = {
-  upload_image_data_url,
+  upload_image_data_urls,
   check_auto_torch,
 };