In short, no.
As a security device the Scout Travel utilizes a bonded bluetooth connection with your phone. It is only possible to control the Scout from the original device in which it has a bonded/encrypted connection.
You can login into the Knog app on multiple iOS devices using your personal login details, however you will only be able to view all the Knog Scout devices that are linked to your profile. Any secondary device logged in to the Knog app will only have READ ONLY access ( meaning you cannot update any settings or arm/disarm your Scouts using a secondary device!).