The integration “authenticated” which, for some reason is depreciated, even though it actually works completely fine, would be a really useful addition to core as you can use it to further secure your home assistant, and also trigger automations upon someone logging in. I use it to automatically send a message and then go disable outside access internet if someone unknown logs in, or if someone who is supposed to only be able to log in locally, has those location (from a different device tracker) somewhere outside the home when logging in. Extremely useful. Also just a good way to add administrative controls.
It logs all logins in a yaml file and creates a sensor with attributes to help monitor logins called sensor.last_sucessful_authentification
Super useful. Just thought it would be cool if it was part of the core so it didn’t have to be manually added to custom_components. Kinda surprised this wasn’t a thing before I found this integration. Have no idea why it’s depreciated tbh. It works fine.