Hello! How can I create a React component that shows a Login or Logout button ?

Hey! You mean from a style point of view or functionality?

functionality

Which supertokens recipe are you using?

thirdpartyemailpassword

Sign out: https://supertokens.com/docs/thirdpartyemailpassword/common-customizations/sign-out

how can I know if the current visitor is logged or not?

You can pass requireAuth={false} prop to the auth wrapper

ahhh

And then inside your component, use useSessionContext to check if a session exists or not

perfect, that was the missing piece

awesome :))