Membership: 2 people logged in with same account?

Hi!

What happens if 2 or more people try to sign in with the same member-account at the same time? We want to make sure, that only one person can be logged in at the same time with one account (to make sure that people rather will not share their logindata to large groups).

Will they maybe get a warning that "somebody is logged in with that account already" ?

Many thanks