From 53f114c74760dfb1ba840347b063ccc2f0df81d5 Mon Sep 17 00:00:00 2001
From: Kosta Korenkov <7r0ggy@gmail.com>
Date: Mon, 31 Aug 2015 08:55:30 +0300
Subject: [PATCH] Double check for QR scanner

Now QR scanner returns only if two consecutive scans return the same result.
---
 src/js/directives/qrScanner.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/js/directives/qrScanner.js b/src/js/directives/qrScanner.js
index dfb840435..ac4ed7b80 100644
--- a/src/js/directives/qrScanner.js
+++ b/src/js/directives/qrScanner.js
@@ -46,6 +46,7 @@ angular.module('copayApp.directives')
               var $video;
               var context;
               var localMediaStream;
+              var prevResult;
 
               var _scan = function(evt) {
                 if (localMediaStream) {
@@ -56,7 +57,7 @@ angular.module('copayApp.directives')
                     //qrcodeError(e);
                   }
                 }
-                $timeout(_scan, 500);
+                $timeout(_scan, 800);
               };
 
               var _scanStop = function() {
@@ -66,6 +67,10 @@ angular.module('copayApp.directives')
               };
 
               qrcode.callback = function(data) {
+                if (prevResult != data) {
+                  prevResult = data;
+                  return;
+                }
                 _scanStop();
                 $modalInstance.close(data);
               };