SuperTokens is an open source authentication solution offering features like: Different types of login: Email / password, Passwordless (OTP or Magic link based).

SuperTokens.com

I’m not sure how https works with ip addresses

I can’t really understand the issue. Maybe use a translator to explain properly please. Otherwise I can’t help.

https://www.loom.com/share/7c2fba63d9154f83a575a447de15a26a

make sure that the apiDomain and websiteDomain is correctly set on the frontend and backend

websiteDomain value should be `"http://localhost:3000"`

and apiDomain should be `"https://192.168.1.45"`

You also need to make sure that you use https for the api domain instead of http. Cause otherwise the browser will reject cookies since the backend and frontend domains are cross site

alternatively, you can switch to using localhost with a different port for the backend as well (instead of using IP address)