manksudons89231 Screenshot blocking isn't a security feature to enforce on other people, that's impossible. Anyone who wants to take a screenshot of their phone can always do it, for example using another phone to take a picture. It's meant to prevent you from accidentally saving a screenshot of a sensitive conversation and adding it to your Gallery app. Signal/Molly is using screenshot blocking properly by making it a feature meant to help you and not showing screenshot alerts within the chat as if they can always detect when a screenshot is taken. Apps that do this (e.g. Snapchat comes to mind) are doing security theater that gives you a false sense of security.