As we will add bonus features to WebRTC app, we will list them (and their usage) here.
The WebRTC app can be loaded with the username field on the login screen already populated. Just use the full login url with the parameter username at the end:
This will open the login page with the user-login already typed in the username field.
If the user opens the link in the tab with WebRTC configured with another username (for example when he receives the link through a message in WebRTC), he will be logged out and taken to the login screen with the pre-filled username. If the user-login is the same as the username of the current user, user will stay logged in and will just be redirected to the keypad.