How do i persist user login for specific period of time to prevent relogging in?

[jtim08515]

Can anyone help me understand what i need to do in order to persist the users logged in session for a certain period of time? for example, say i want the user to be logged in for a whole day. Also, do i need to do anything special when the app is running in the background vs. closed explicitly by the user or is it all the same process?

We are currently authenticating users using the following code

await auth().signInWithCustomToken(token);