Registering multiple Petcube Cameras to one account
At this time, there's no option to register multiple cameras under a single account, because only one Petcube Camera can be shown on the left side bar in Petcube application, right where it says ‘My Petcube Camera’.
But as a temporary workaround, you can create an account for each camera and share access to every camera with all other accounts. This way you can have access to multiple cameras on a single account, one will be shown on the Home menu and all the other cameras on the ‘Play’ tab.
To be able to do that, go to ‘Home’ menu on the left, select ‘Settings’ at the bottom, select 'Sharing', then select ‘Friend’, tap ‘Add members’ at the bottom and enter the username of the account you want to share access to.