As you can see in the last screenshot on the right, one that has not updated their app will be shown a message that prompts them to update in order to see the new Stickers. Alongside the new feature, WhatsApp is reportedly working on a new security feature for its iOS app so that one can use both Touch ID and Face ID to lock and unlock the messaging app on. An earlier report suggests that the feature is currently in an early alpha stage of testing and needs many improvements before being made available to everyone. As per the report, some iOS users can see the new feature with the latest version of WhatsApp on their iPhones but it won’t be enabled since the feature is under development.