How to change users while preserving the store?

I want to implement a "fast login".

I'm developing an enterprise software where a lot of users work in the same organization with the same data in the same computer and I want to be able to know who did what and when. Right now they have to log out and log in and load the data has to be loaded into the store all over again.

What I want is for them to be able to, without logging out, click on a user, from the organization, insert his password and the user is switched while preserving the store.

Any idea how I can accomplish this?

I'm using ember-simple-auth v1.1.0 and ember v2.10.2