#218 add macos entry to the FAQ

faq/index.markdown

@@ -14,7 +14,8 @@ General
 
 * [Is the program infected with a virus?](virus.html)
 * [Where can I submit bugs or feature requests?](feedback.html)
-* [Why is the scanning so slow on Windows?](windows.html)
+* [Why is the scanning slower on Windows?](windows.html)
+* [How to run the app on macOS?](macos.html)
 * [Where do I get plugins?](/contribute/plugins.html)
 
 Scanning

faq/macos.markdown

@@ -0,0 +1,27 @@
+---
+title: Running on Mac
+layout: default
+---
+
+# Bypassing Signing & Notarization
+
+Apple now requires all Mac apps to be signed and sent to them to make it runnable normally.
+This requires paying $100 to Apple and making many additional build/release steps that only work on macOS itself.
+
+Until this is done/automated, the following can be used:
+
+A user that has admin/sudo rights on the system can bypass. 
+After unzipping on Catalina (and versions before), hold Control while right-clicking or using two-finger click and select Open. 
+You will get a different message from just right click and open, where you are prompted that the item is not registered with Apple, 
+and asks if you are still willing to open the application. 
+
+Select Open and it will remember your choice when you run it again.
+
+## macOS Dark Mode
+
+Angry IP Scanner support macOS dark mode if it runs on Java VM, which is itself compiled using a recent macOS SDK.
+
+This is because Apple decides whether to allow the mode based on the SDK version that was used by the developer.
+The binary that starts the app is actually Java, so this is what macOS checks.
+
+Please use a recent Java version.