Ember-simple-atuh: how to switch user without logout

We want to implement a simple way of switch users without they having to logout and login. Our system is used by companies, and in each company everybody uses a shared computer. They say it takes to long to logout and login with a different user, we are trying to have a list of previously logged in sessions, which they can shoes from and witch to.

Any ideas how to achieve this with ember-simple-auth?