diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 000000000..26d33521a
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 000000000..4e2cdf6b8
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/passport-sbt.iml" filepath="$PROJECT_DIR$/.idea/passport-sbt.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/passport-sbt.iml b/.idea/passport-sbt.iml
new file mode 100644
index 000000000..d6ebd4805
--- /dev/null
+++ b/.idea/passport-sbt.iml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 000000000..35eb1ddfb
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/app/App.tsx b/app/App.tsx
index 299a985cb..79163d692 100644
--- a/app/App.tsx
+++ b/app/App.tsx
@@ -197,12 +197,12 @@ function App(): JSX.Element {
       if (err) {
         console.error(err);
         setProofResult(
-          err.toString() + ' time elapsed: ' + (end - start) + 'ms',
+          "res:" + err.toString() + ' time elapsed: ' + (end - start) + 'ms',
         );
       } else {
         console.log(res);
         setProofResult(
-          res.toString() + ' time elapsed: ' + (end - start) + 'ms',
+          "res:" + res.toString() + ' time elapsed: ' + (end - start) + 'ms',
         );
       }
     });
diff --git a/app/README.md b/app/README.md
index 6d8f97e29..e1823838a 100644
--- a/app/README.md
+++ b/app/README.md
@@ -4,6 +4,16 @@ To build libhalo2_passport.so, run in /script:
 ```
 It will cross-compile using the config in app/android/react-native-passport-reader/android/build.gradle
 
+You'll potentially need to set the rust-toolchain rust version as global default. Example:
+```
+rustup default 1.67.0
+```
+And install the targets like:
+```
+rustup target add aarch64-linux-android
+```
+
+
 Then:
 yarn start => a or i