Would be great to have the ability to use biometric authentication (if users have enabled it) to secure sensitive areas of apps when resuming from background or from restart. I've implemented someone's custom code for this (https://community.flutterflow.io/c/community-custom-widgets/post/app-lifecycle-implementation-for-pin-and-biometric-app-security-YxuJfeq00NGIBIV) but redirecting to another page to initiate is not good CX. I've also had a lot of issues with the singleton and have seen through debugging logs that multiple observers get created anyway.
Technicalities aside, would be a great feature to have to make apps more secure and seamless for users. Thanks again for all the hard work!