diff --git a/src/App.vue b/src/App.vue
index fbcbd08..d7861fa 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -9,31 +9,32 @@
               <v-card-text>
                 <div class="flex justify-center text-center">
                   <video
-                    ref="video"
-                    autoplay
-                    playsinline
-                    muted
-                    width="320"
-                    height="240"
-                    style="border-radius: 8px; background: #000"
-                    v-show="cameraActive && !photoData"
+                  ref="video"
+                  autoplay
+                  playsinline
+                  muted
+                  width="320"
+                  height="240"
+                  class="rounded-lg bg-black"
+                  v-show="cameraActive && !photoData"
                   ></video>
 
                   <img
-                    v-if="photoData"
-                    :src="photoData"
-                    alt="自拍预览"
-                    width="320"
-                    height="240"
-                    style="border-radius: 8px; object-fit: cover"
+                  v-if="photoData"
+                  :src="photoData"
+                  alt="预览"
+                  width="320"
+                  height="240"
+                  class="rounded-lg object-cover"
                   />
                 </div>
 
+                <div v-if="errorMsg" class="text-red-600 text-center mt-2">
+                  {{ errorMsg }}
+                </div>
+
                 <div class="mt-4 flex gap-3 justify-center">
-                  <v-btn color="primary" @click="startCamera" v-if="!cameraActive"
-                    >打开摄像头</v-btn
-                  >
-                  <v-btn color="primary" @click="takePhoto" v-if="cameraActive && !photoData"
+                  <v-btn color="primary" @click="takePhoto" :disabled="!cameraActive" v-if="!photoData"
                     >拍照</v-btn
                   >
                   <v-btn color="secondary" @click="retake" v-if="photoData">重拍</v-btn>
@@ -50,15 +51,22 @@
                   </label>
                 </div>
 
+                  <v-switch v-model="saveConsent" inset hide-details color="primary" class="mt-4" label="允许 littlew.top 将此信息与你的账户关联" />
+
                 <v-progress-linear
                   :indeterminate="true"
                   v-if="loading"
                   class="mt-4"
                 ></v-progress-linear>
 
-                <div v-if="responseText" class="mt-4">
+                <div v-if="debug" class="mt-4">
                   <div>调试信息</div>
-                  <pre class="bg-gray-100 p-3 rounded overflow-auto">{{ responseText }}</pre>
+                  <pre class="bg-gray-100 p-3 rounded overflow-auto">{{ debug }}</pre>
+                </div>
+
+                <div v-if="age !== null || gender !== null" class="mt-4 text-center">
+                  <div>年龄：{{ ageDisplay }}</div>
+                  <div>性别：{{ genderDisplay }}</div>
                 </div>
               </v-card-text>
             </v-card>
@@ -78,43 +86,59 @@ export default {
       photoData: null,
       photoBlob: null,
       loading: false,
-      responseText: '',
+      debug: '',
+      errorMsg: '',
+      saveConsent: true,
+      age: null,
+      gender: null,
     }
   },
   methods: {
     async startCamera() {
-      this.stream = await navigator.mediaDevices.getUserMedia({
-        video: { facingMode: 'user' },
-        audio: false,
-      })
-      this.cameraActive = true
-      await this.$nextTick()
-      const videoEl = this.$refs.video
-      videoEl.srcObject = this.stream
-      await videoEl.play().catch(() => {})
+      try {
+        this.stream = await navigator.mediaDevices.getUserMedia({
+          video: { facingMode: 'user' },
+          audio: false,
+        })
+        this.cameraActive = true
+        await this.$nextTick()
+        const videoEl = this.$refs.video
+        videoEl.srcObject = this.stream
+        await videoEl.play().catch(() => {})
+      } catch (e) {
+        this.errorMsg = e
+      }
     },
     takePhoto() {
-      const video = this.$refs.video
-      const canvas = document.createElement('canvas')
-      canvas.width = video.videoWidth || 320
-      canvas.height = video.videoHeight || 240
-      const ctx = canvas.getContext('2d')
-      ctx.drawImage(video, 0, 0, canvas.width, canvas.height)
-      canvas.toBlob(
-        (blob) => {
-          this.photoBlob = blob
-          this.photoData = URL.createObjectURL(blob)
-        },
-        'image/jpeg',
-        0.9
-      )
-      this.stopCamera()
+      try {
+        const video = this.$refs.video
+        const canvas = document.createElement('canvas')
+        canvas.width = video.videoWidth || 320
+        canvas.height = video.videoHeight || 240
+        const ctx = canvas.getContext('2d')
+        ctx.drawImage(video, 0, 0, canvas.width, canvas.height)
+        canvas.toBlob(
+          (blob) => {
+            this.photoBlob = blob
+            this.photoData = URL.createObjectURL(blob)
+          },
+          'image/jpeg',
+          0.9
+        )
+        this.stopCamera()
+      } catch (e) {
+        this.errorMsg = e
+      }
     },
     retake() {
-      if (this.photoData) URL.revokeObjectURL(this.photoData)
-      this.photoData = null
-      this.photoBlob = null
-      this.startCamera()
+      try {
+        if (this.photoData) URL.revokeObjectURL(this.photoData)
+        this.photoData = null
+        this.photoBlob = null
+        this.startCamera()
+      } catch (e) {
+        this.errorMsg = e
+      }
     },
     stopCamera() {
       if (this.stream) {
@@ -124,40 +148,69 @@ export default {
       this.cameraActive = false
     },
     onFileChange(e) {
-      const file = e.target.files && e.target.files[0]
-      if (!file) return
-      this.photoBlob = file
-      this.photoData = URL.createObjectURL(file)
+      try {
+        const file = e.target.files && e.target.files[0]
+        this.photoBlob = file
+        this.photoData = URL.createObjectURL(file)
+      } catch (e) {
+        this.errorMsg = e
+      }
     },
     async uploadPhoto() {
-      if (!this.photoBlob) return alert('请先拍照或选择图片')
+      if (!this.photoBlob) {
+        this.errorMsg = '请先拍照或选择图片'
+        return
+      }
       this.loading = true
-      this.responseText = ''
+      this.debug = ''
       try {
         const form = new FormData()
         form.append('face', this.photoBlob, 'selfie.jpg')
 
-        const resp = await fetch('https://api.littlew.top/age', {
+        let url = 'https://api.littlew.top/age'
+        if (this.saveConsent) url += '?save=true'
+        const resp = await fetch(url, {
           method: 'POST',
           body: form,
+        }, {
+          credentials: 'include',
         })
 
         const text = await resp.text()
         try {
-          const obj = JSON.parse(text)
-          this.responseText = JSON.stringify(obj, null, 2)
+          const data = JSON.parse(text)
+          this.debug = data.raw
+          this.age = typeof data.age === 'number' ? data.age : -1
+          this.gender = typeof data.gender === 'number' ? data.gender : -1
         } catch (e) {
-          this.responseText = text
+          this.debug = text
+          this.age = -1
+          this.gender = -1
         }
       } catch (e) {
-        this.responseText = e.message
+        this.errorMsg = e
       } finally {
         this.loading = false
       }
     },
   },
+  computed: {
+    ageDisplay() {
+      if (this.age === null) return '未知'
+      return this.age > -1 ? String(this.age) : '未知'
+    },
+    genderDisplay() {
+      if (this.gender === null) return '未知'
+      if (this.gender === 0) return 'Female'
+      if (this.gender === 1) return 'Male'
+      return '未知'
+    },
+  },
   beforeUnmount() {
     this.stopCamera()
   },
+  mounted() {
+    this.startCamera()
+  }
 }
 </script>