How the login details to a Genius Hub work
Each hub has a single user name username and password. This means it needs they need to be set to something that the owner of the user system is happy to give out to anyone who they want to be able to control their the heating.
What if two people are logged in at the same time?
If two people are logged on at the same time, this is fine, but they will find that they can override each others settings if they are adjusting the same room at the same time.
. If conflicting actions are taken (such as 2 overrides are selected) the Genius Hub will take the last command that it receives from any of the apps that are logged into it.