Multiple simultaneous logins in different browser tabs?

I’m looking to implement multiple simultaneous logins to my Meteor app and wonder if it’s even possible. I’m trying to emulate Google’s multiple-logins (different accounts) across multiple tabs.

When I try just opening two tabs and logging into each with a different account, it obviously doesn’t work. Is there anything I can do to enable Meteor to have this behavior?

My use case is where an Administrator would have her own login to several customer’s sections of our app - like an account manager. Having all of these logins open in different tabs simultaneously is the goal. Is this even possible?