add check if security is enabled

RNDeviceInfo/RNDeviceInfo.m

@@ -162,6 +162,12 @@ RCT_EXPORT_MODULE()
   return [[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad;
 }
 
+- (bool) isSecurityEnabled
+{
+  LAContext *context = [[LAContext alloc] init];
+  return ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:nil]);
+}
+
 - (NSDictionary *)constantsToExport
 {
     UIDevice *currentDevice = [UIDevice currentDevice];
@@ -186,6 +192,7 @@ RCT_EXPORT_MODULE()
              @"timezone": self.timezone,
              @"isEmulator": @(self.isEmulator),
              @"isTablet": @(self.isTablet),
+             @"isSecurityEnabled": @(self.isSecurityEnabled),
              };
 }
 

android/src/main/java/com/learnium/RNDeviceInfo/RNDeviceModule.java

@@ -69,6 +69,11 @@ public class RNDeviceModule extends ReactContextBaseJavaModule {
     return layout == Configuration.SCREENLAYOUT_SIZE_LARGE || layout == Configuration.SCREENLAYOUT_SIZE_XLARGE;
   }
 
+  private Boolean isSecurityEnabled() {
+    KeyguardManager keyguardManager = (KeyguardManager) this.reactContext.getSystemService(Context.KEYGUARD_SERVICE); //api 16+
+    return keyguardManager.isKeyguardSecure();
+  }
+
   @Override
   public @Nullable Map<String, Object> getConstants() {
     HashMap<String, Object> constants = new HashMap<String, Object>();
@@ -113,6 +118,7 @@ public class RNDeviceModule extends ReactContextBaseJavaModule {
     constants.put("timezone", TimeZone.getDefault().getID());
     constants.put("isEmulator", this.isEmulator());
     constants.put("isTablet", this.isTablet());
+    constants.put("isSecurityEnabled", this.isSecurityEnabled());
     return constants;
   }
 }

deviceinfo.js

@@ -62,4 +62,7 @@ module.exports = {
   isTablet: function() {
     return RNDeviceInfo.isTablet;
   },
+  isSecurityEnabled: function () {
+    return RNDeviceInfo.isSecurityEnabled;
+  },
 };