You are welcome to actually look at the code for any of these solutions.

Here is the documentation for Phoenix channel authentication (what Phoenix Live View is built upon): https://hexdocs.pm/phoenix/channels.html#using-token-authent...

Additionally, here is some documentation on the security considerations specific to Live View: https://hexdocs.pm/phoenix_live_view/security-model.html

Searching can probably find you more information.