diff --git a/app/AndroidManifest.xml b/app/AndroidManifest.xml
index 78b7544..cd3ba49 100644
--- a/app/AndroidManifest.xml
+++ b/app/AndroidManifest.xml
@@ -48,4 +48,5 @@
     <uses-permission
         android:name="android.permission.READ_EXTERNAL_STORAGE"
         android:maxSdkVersion="18" />
+    <uses-permission android:name="android.permission.USE_BIOMETRIC" />
 </manifest>
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index 818fbcd..6029298 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -108,5 +108,6 @@ dependencies {
     implementation project(':libcocos2dx')
 
     implementation "androidx.appcompat:appcompat:1.0.2"
+    implementation "androidx.biometric:biometric:1.1.0"
     implementation files('../libs/unity-classes.jar')
 }
\ No newline at end of file
diff --git a/js/main.js b/js/main.js
index 705b433..d1852da 100644
--- a/js/main.js
+++ b/js/main.js
@@ -200,3 +200,13 @@ function sendErc20(funId, address, to, amount) {
     })
 }
 
+function restoreFromMnemonic(mnemonic, password) {
+  try {
+    diameter = parseFloat(diameter);
+    let result = jc.wallet.restoreFromMnemonic(mnemonic, password);
+    return JSON.stringify({errcode: 0, data: result});
+  } catch(err) {
+    return JSON.stringify({errcode: 1, errmsg: err});
+  }
+}
+