diff --git a/Architecture.md b/Architecture.md
index 0e60831..d623092 100644
--- a/Architecture.md
+++ b/Architecture.md
@@ -105,4 +105,6 @@ Desktop apps are packaged with [electron-packager](https://github.com/electron/e
 
 KeeWeb uses native modules ([node.js C++ addons](https://nodejs.org/api/addons.html#addons_context_aware_addons)) in desktop apps. All modules used in KeeWeb are built in [keeweb-native-modules](https://github.com/keeweb/keeweb-native-modules) repository. Native modules are created:
 - if the functionality is not available in Electron, for example, YubiKey API
-- when implementing it in JavaScript would be significantly slower, for example, Argon2
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+- when implementing it in JavaScript would be significantly slower, for example, Argon2
+
+In other cases it's better to implement everything in JavaScript. For example, a native module for reading QR codes would not be an acceptable solution.
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